[Ignore] Testing CI

[MichalStrehovsky]

This reverts commit 6123c24.

[Copilot]

Pull Request Overview

This PR reverts a previous commit (6123c24), likely for testing CI purposes. The revert involves significant changes to unwind helpers across multiple ARM and RISC-V architectures, affecting register handling and validation logic.

Key changes:

• Removes the unwindhelpers_bitcast template function and related type casting logic
• Modifies register validation and access methods across ARM, ARM64, LoongArch64, and RISC-V architectures
• Changes float/vector register handling implementations

[MichalStrehovsky]

/azp run runtime-nativeaot-outerloop

[dotnet-policy-service]

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[risc-vv]

@dotnet/samsung Could you please take a look? These changes may be related to riscv64.