feat: explicit set useDefineForClassFields in ts templates

[haoqunjiang]

Description

Since TypeScript 4.3, target: "esnext" indicates that
useDefineForClassFields: true as the new default.
See microsoft/TypeScript#42663

So I'm explicitly adding this field to the tsconfigs to avoid any
confusions.

Note that lit-element projects must use
useDefineForClassFields: false because of lit/lit#3278

Vue projects must use useDefineForClassFields: true so as to support
class style prop definition in vue-class-component:
vuejs/vue-class-component#465

Popular React state management library MobX requires it to be true:
https://mobx.js.org/installation.html#use-spec-compliant-transpilation-for-class-properties

Other frameworks seem to have no particular opinion on this.

So I turned it on in all templates except for the lit-element one.

Additional context

#4279 needs to be resolved before this PR to avoid confusing users.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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