Refresh NineSlice UVs when setFrame skips resizing

[ICOM725]

This PR

• Fixes a bug

Describe the changes below:

NineSlice.setFrame(frame, false) changes the frame reference but leaves the vertex UVs unchanged, because they are only refreshed through setSizeToFrame(). Add a NineSlice override that delegates to the existing Texture component and refreshes UVs when resizing is disabled.

ChrisCPI previously included a fix for this in #7167. That PR was closed during the v3 transition with an invitation to resubmit changes still applicable to v4. This PR keeps the change limited to frame updates and adds regression tests against the current v4 source.

The ten tests cover 3-slice and 9-slice objects, both updateOrigin values, Frame instances, the default size-update behavior, and the setTexture(..., false, false) path. They check actual vertex UVs and verify that skipping size/origin updates preserves dimensions and vertex positions.

Fixes #7110.

Verification:

• Before the fix, eight regression tests failed and the two default-size controls passed.
• npm test -- tests/gameobjects/nineslice tests/gameobjects/components/Texture.test.js --maxWorkers=2: 6 files and 75 tests passed.
• Targeted ESLint 8.57.1 checks passed for both changed files using the repository configuration.
• npm run build: webpack compiled successfully; the subsequent copy-to-examples step reported the missing sibling examples directory.
• git diff --check passed.