Fix scale gizmo isHovered flag

[CedricGuillemet]

follow up https://forum.babylonjs.com/t/scalegizmo-ishovered-not-triggering-for-uniformscalegizmo/49380/4

[bjsplat]

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To prevent this PR from going to the changelog marked it with the "skip changelog" label.

[bjsplat]

Snapshot stored with reference name:
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Test environment:
https://babylonsnapshots.z22.web.core.windows.net/refs/pull/14958/merge/index.html

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[bjsplat]

Visualization tests for WebGPU (Experimental)
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https://babylonsnapshots.z22.web.core.windows.net/refs/pull/14958/merge/testResults/webgpuplaywright/index.html

[bjsplat]

WebGL2 visualization test reporter:

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Visualization tests for WebGL 1 have failed. If some tests failed because the snapshots do not match, the report can be found at

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[bjsplat]

Visualization tests for WebGL 1 have failed. If some tests failed because the snapshots do not match, the report can be found at

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If tests were successful afterwards, this report might not be available anymore.

[bjsplat]

Visualization tests for WebGL 1 have failed. If some tests failed because the snapshots do not match, the report can be found at

https://babylonsnapshots.z22.web.core.windows.net/refs/pull/14958/merge/testResults/webgl1/index.html

If tests were successful afterwards, this report might not be available anymore.