refactor(vscode, language-server): remove hybrid mode configuration

[johnsoncodehk]

As part of the 3.0 refactoring, the VSCode extension and language server no longer provide a configuration option to disable hybrid mode, which greatly reduces the amount of code to maintain, and this reduces the need for fs hacks on the typescript-language-features code. Our ultimate goal is to eliminate the need for fs hacks altogether, so this is an important progress.

Since language-server only works with typescript-plugin now, the test infrastructure needs to be refactored to run against @vue/typescript-plugin, which we do based on typescript-server-harness.

The test time has increased considerably for the time being, and this will be addressed in #5252 that removes the named pipe.

[pkg-pr-new]

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vue-component-meta

npm i https://pkg.pr.new/vuejs/language-tools/vue-component-meta@5248 

vue-component-type-helpers

npm i https://pkg.pr.new/vuejs/language-tools/vue-component-type-helpers@5248 

@vue/language-core

npm i https://pkg.pr.new/vuejs/language-tools/@vue/language-core@5248 

@vue/language-plugin-pug

npm i https://pkg.pr.new/vuejs/language-tools/@vue/language-plugin-pug@5248 

@vue/language-server

npm i https://pkg.pr.new/vuejs/language-tools/@vue/language-server@5248 

vue-tsc

npm i https://pkg.pr.new/vuejs/language-tools/vue-tsc@5248 

@vue/language-service

npm i https://pkg.pr.new/vuejs/language-tools/@vue/language-service@5248 

@vue/typescript-plugin

npm i https://pkg.pr.new/vuejs/language-tools/@vue/typescript-plugin@5248 

commit: 7e6a485