[GH] (texera/gh-readonly-queue/main/pr-9027-3ba45ee5a5f641388d1a9eda90afa26a62d70d30): Workflow run "Required Checks" failed!

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The GitHub Actions job "Required Checks" on texera.git/gh-readonly-queue/main/pr-9027-3ba45ee5a5f641388d1a9eda90afa26a62d70d30 has failed.
Run started by GitHub user aglinxinyuan (triggered by aglinxinyuan).

Head commit for run:
a68906d9bc28b26acdda6b32e55801fbda045f76 / Xinyuan Lin <xi...@uci.edu>
refactor(frontend): remove the dead admin Gmail stylesheet (#9027)

### What changes were proposed in this PR?

Deletes `admin-gmail.component.scss` and its `styleUrls` entry in
`admin-gmail.component.ts`. **−27 lines.** There is no behaviour change.

The stylesheet's only rule is `.form { ... }`. The component uses
emulated encapsulation, so the rule can only match an element in its own
template, and that template has no element with class `form`. The `<form
nz-form>` element doesn't match: `.form` is a class selector, and
`NzFormDirective` adds only `ant-form*` classes. Nothing else references
the file (`angular.json` styles, `@use`, `@import`). With no styles
left, Angular compiles the component without view emulation, so the
rendered DOM only loses the generated `_ngcontent` attributes.

### History

| | |
| --- | --- |
| **Introduced by** | #2027 (2023-10-11), "Introduce Email Notification
System". It copied `.form` from the login stylesheet into the new
component |
| **Usage removed by** | **never used**. No version of the Gmail
template has had a `form` class |

It has never applied, in the three years since it was added.

### Any related issues, documentation, discussions?

Closes #9024

### How was this PR tested?

No new tests; the spec never referenced the stylesheet.

From `frontend/`:

- `npx ng test --watch=false
--include='**/admin-gmail.component.spec.ts'`: 10 tests, all pass. No
other spec renders the component.
- `yarn format:ci`: clean.
- `npx ng build`: success.

### Was this PR authored or co-authored using generative AI tooling?

Generated-by: Claude Code (Claude Opus 5.5)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Report URL: https://github.com/apache/texera/actions/runs/39585543643

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