fix: border radius on Menu

[kurtdoherty]

The new Menu's border radius is not working as expected. The popover's background is not transparent as intended, perhaps because of the box-shadow? 🤷 Either way, we need to shift the border-radius from the ElMenuContent styled element to the popover element itself.

[rpt-uk-github]

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[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for 1d1e6e21	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (1d1e6e2)	Report Missing	Report Missing	Report Missing
Head commit (0cbfc48)	8041	7317	91.00%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#645)	5	5	100.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[kurtdoherty]

note: small scout. Making this helper a property of the Menu component means its future deprecation and removal will not require any changes to import statements in consumers.

[kurtdoherty]

note: this is now being exposed as a property on the Menu component