Improve F12 UX for using declaration in .bicepparam

[shenglol]

Updated BicepDefinitionHandler to handle UsingDeclarationSyntax, ensuring that Bicep source files instead of ARM template files for remote modules are opened (if Bicep source is available). This aligns the user experience with the behavior of Go to Definition for module paths in Bicep files.

Closes #17859.

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Test this change out locally with the following install scripts (Action run 18951564332)

VSCode

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-vsix.sh) --run-id 18951564332

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-vsix.ps1) } -RunId 18951564332"

Azure CLI

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-cli.sh) --run-id 18951564332

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-cli.ps1) } -RunId 18951564332"

[github-actions]

Dotnet Test Results

    96 files   -     48      96 suites   - 48   40m 42s ⏱️ - 24m 24s
12 525 tests  -     13  12 525 ✅  -     13  0 💤 ±0  0 ❌ ±0 
28 795 runs   - 14 391  28 795 ✅  - 14 391  0 💤 ±0  0 ❌ ±0 

Results for commit 9e58049. ± Comparison against base commit eb45f4e.

This pull request removes 1950 and adds 661 tests. Note that renamed tests count towards both.

		nestedProp1: 1
		nestedProp2: 2
		prop1: true
		prop2: false
	1
	2
	\$'")
	prop1: true
	prop2: false
…

Bicep.Cli.UnitTests.Services.ReplEnvironmentTests ‑ ShouldSubmitBuffer_terminates_at_expected_point ("var foo = {
")
Bicep.Cli.UnitTests.Services.ReplEnvironmentTests ‑ ShouldSubmitBuffer_terminates_at_expected_point ("var multilineString = '''
Line 1
Line 2
Line 3
'''")
Bicep.Cli.UnitTests.Services.ReplEnvironmentTests ‑ ShouldSubmitBuffer_terminates_at_expected_point ("var outRoleAssignments object[] = union(map(
  filter(varMockedEntraGroupIds, item => !contains(item.uniqueName, 'DevOps')),
  group => {
    principalId: group.groupId
    definition: group.roleToAssign
    relativeScope: ''
    principalType: 'Group'
  }
),[
  {
    principalId: '22222222-2222-2222-2222-222222222222'
    definition: 'Reader'
    relativeScope: ''
    principalType: 'ServicePrincipal'
  }
])")
Bicep.Cli.UnitTests.Services.ReplEnvironmentTests ‑ ShouldSubmitBuffer_terminates_at_expected_point ("var test = {
  abc: 'def' // boo
}")
Bicep.Cli.UnitTests.Services.ReplEnvironmentTests ‑ ShouldSubmitBuffer_terminates_at_expected_point ("var varMockedEntraGroupIds = [
  {
    uniqueName: 'Reader-Group'
    roleToAssign: 'Reader'
    groupId: '11111111-1111-1111-1111-111111111111'
  }
  {
    uniqueName: 'Contributor-Group'
    roleToAssign: 'Contributor'
    groupId: '22222222-2222-2222-2222-222222222222'
  }
  {
    uniqueName: 'DevOps-Group'
    groupId: '33333333-3333-3333-3333-333333333333'
  }
]")
Bicep.Core.IntegrationTests.AzTypesViaRegistryTests ‑ Bicep_compiler_handles_corrupted_extension_package_gracefully (\u001f�\u0008\u0000\u0000\u0000\u0000\u0000\u0000
�Խ
�0\u0010\u0007��}
� ޅKb\u0007wǾBh�~`,\u001a�P��=�B\u0007���B�\u001b\u0013�\r�#ӝ��\u001dʦ�[�(�bn�\u000c���\u00005
�/ �jm�H��;\u0019ѵ�5��\u0012g� �%.��2Gk0#�\u0011$π(�
��'�0��p�;�����s[����*X��Ѩ��}�>�\u001f@	�\u0003\u0000�\u0002\u0002��G���E2����?�� ��(Z�\u0013�Q�h\u0000\u000c\u0000\u0000,"The path: index.json was not found in artifact contents")
Bicep.Core.IntegrationTests.AzTypesViaRegistryTests ‑ Bicep_compiler_handles_corrupted_extension_package_gracefully (\u001f�\u0008\u0000\u0000\u0000\u0000\u0000\u0000
��K
�0\u0010\u0006�=E�\u0001�L��\u0015ܻ\u0011�x�hGTl�6B@���Bܴ��\u000f0�23�Ʉ_�����\u0016T7"ש\u001c\u000b64\u0008����-\u000c54\u000f��(
�q?�$\u001d.��u\u0018�\u0013w���p��%��h�H�0\u0013\u0006ri&�P���0�g�v�}U�\u0017��T��eO���\u0018�{�����*����+\u00040)HD\u0006Zei��G2�����dU�?��Q��rMu2�[{l���٢(����\u0003���\u0002\u0000\u000c\u0000\u0000,"Value cannot be null. (Parameter 'source')")
Bicep.Core.IntegrationTests.AzTypesViaRegistryTests ‑ Bicep_compiler_handles_corrupted_extension_package_gracefully (\u001f�\u0008\u0000\u0000\u0000\u0000\u0000\u0000
���\u000b�0\u0014\u0007��+�?`�����C�!#,\u0008���A\u0006Z���?�<D\u0017��Z�>ǽ\u0007{��\u000e{;լ�JuY�PP�a44b\u0008�:�[�$\u0002�B\u0010�\�\u00089���t�W�*�(S���h�:�u\u0004R@�8\u0007\u001f\u000b)\u0002\u0000:3�S_
B��s�\u0015�n�\u0016m{����cZ=��7�\u0015}�?�\u000c\u0001\u0007B$%\u000c\u0000\u0011�}0��$�����\u001b'��&^\u001e��m��\u001d�\u0003�{&˲,k|O\u0011�*�\u0000\u000c\u0000\u0000,"'7' is an invalid end of a number. Expected a delimiter. Path: $.INVALID_JSON | LineNumber: 0 | BytePositionInLine: 20.")
Bicep.Core.IntegrationTests.AzTypesViaRegistryTests ‑ Bicep_compiler_handles_corrupted_extension_package_gracefully (\u001f�\u0008\u0000\u0000\u0000\u0000\u0000\u0000\u0003��K
�0\u0010\u0006�=EO�Τy���]z��\u0001\u001f4�6łxwӅ�"�Mm\u0004�-3\u000c3!���N�[�\u000f��i!e�S�4�$���	
$�^��\u0012\u0012	���7	\u0018z�;��\u001a�~\u0010+3�N��QI,�(���B\u0010����~���U�c=؋mo����N
�\C�&A����\u0019��\u000f���\u0003\u0000\u0014\u0003���(|�W�������A�$I\u0012�\u0013N���\u0000\u000c\u0000\u0000,"The path: index.json was not found in artifact contents")
Bicep.Core.IntegrationTests.AzTypesViaRegistryTests ‑ Bicep_compiler_handles_corrupted_extension_package_gracefully (\u001f�\u0008\u0000\u0000\u0000\u0000\u0000\u0000\u0003��K
�0\u0010\u0006�=E�\u0001bҼZ�{7�\u001b\u000f\u0010�\u0011+���BA���Bܴ��C0�230\u0013�\u001f�ޛv\u000b&��\u0012�T�&hl�QB��w�Ј�7���J!���7�q����*s��Aa�M�\u0017�0�X$$\u0017�D�S�����C5\u0016��4�$/3h���ʮ�\u0018j_��ހ��M7�[�)\u0017�IF�\u000e�_�\u0010U��.��d������������l\u0007�\u0011�`�O�j��n��y�t^ :�U\u0000\u000c\u0000\u0000,"Value cannot be null. (Parameter 'source')")
…