fix: vitest cannot read the latest config when it changes

[stygian-desolator]

Description

close #983 close #982 close #981

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[antfu]

I am not sure about this approach, can't we avoid mutation somehow?

[stygian-desolator]

Or... Maybe this is a bug in vite 🤔 ？ When the config is changed, the previous options are remembered even though vite restarts the server.

[sapphi-red]

Sorry for interrupting. I dont think this PR will fix #981 #982. Because these issues are happening by inconsistency between globTestFiles and isTargetFile (which is used in watcher.on('add', onAdd)). Also config change is not required to reproduct #981 and #982. https://github.com/vitest-dev/vitest/blob/c9f53f21f341bf119c4009115c94375a2aaa39d8/packages/vitest/src/node/core.ts#L397 https://github.com/vitest-dev/vitest/blob/c9f53f21f341bf119c4009115c94375a2aaa39d8/packages/vitest/src/node/core.ts#L432

[sheremet-va]

I think this is fixed now?

[sapphi-red]

@sheremet-va I tested the repro of #983 and it worked with the latest version. For #981 and #982, those are fixed by #1070. So it's fixed.