Revert debug controller UI additions

[Skn0tt]

Counterpart to microsoft/playwright-vscode#693.

[github-actions]

Test results for "tests 1"

5 flaky

⚠️ [chromium-library] › library/popup.spec.ts:258 › should not throw when click closes popup `@chromium-ubuntu-22.04-node24`
⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1079 › cli codegen › should not throw csp directive violation errors `@firefox-ubuntu-22.04-node18`
⚠️ [firefox-library] › library/inspector/cli-codegen-pick-locator.spec.ts:35 › should update locator highlight `@firefox-ubuntu-22.04-node18`
⚠️ [firefox-page] › page/page-event-request.spec.ts:182 › should return response body when Cross-Origin-Opener-Policy is set `@firefox-ubuntu-22.04-node18`
⚠️ [playwright-test] › ui-mode-trace.spec.ts:154 › should show snapshots for steps `@windows-latest-node18-1`

43996 passed, 797 skipped

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Merge workflow run.