fix: allow plugins overriding core plugins

[jdx]

A recent bug caused core plugins to override local ones. This is temporary to patch mise, this will be soon fixed along with some tests to verify that core plugin overriding continues to function.

[github-actions]

Package	Line Rate	Complexity	Health
src	87%	0	✔
src.cli	83%	0	✔
src.cli.alias	89%	0	✔
src.cli.args	96%	0	✔
src.cli.backends	95%	0	✔
src.cli.cache	95%	0	✔
src.cli.config	92%	0	✔
src.cli.direnv	80%	0	✔
src.cli.generate	93%	0	✔
src.cli.plugins	87%	0	✔
src.cli.settings	93%	0	✔
src.cli.sync	29%	0	❌
src.cli.tasks	71%	0	➖
src.config.config_file	89%	0	✔
src.config	87%	0	✔
src.forge	77%	0	✔
src.plugins.core	56%	0	➖
src.plugins	79%	0	✔
src.shell	98%	0	✔
src.toolset	86%	0	✔
src.ui	64%	0	➖
Summary	81% (13663 / 16789)	0	✔

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.02%	✅ 80.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (bb1556e)	16791	13668	81.40%
Head commit (0b9a317)	16789 (-2)	13663 (-5)	81.38% (-0.02%)

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 (#2155)	10	8	80.00%

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%

See your quality gate settings    Change summary preferences

_{Codacy will stop sending the deprecated coverage status from June 5th, 2024. Learn more}