fix(@schematics/angular): remove extra comma in component schematic

[cexbrayat]

This was introduced by #13690

Previously to this commit, a trailing comma was always added after styles/styleUrls
The viewEncapsulation also adds one, so there is an extra one.

Fixes: #13742

[alan-agius4]

Thinking about this, we should probably remove ViewEncapsulation from this file. Inc the import.

Since now we set the defaultViewEncapsulation in main.ts

[cexbrayat]

@alan-agius4 Sure. I updated the PR

[alan-agius4]

Thanks

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