feat(vapor): generate more efficient runtime code for specific interpolation patterns

[johnsoncodehk]

Added two new template interpolation matching patterns to generate more efficient runtime code.

1. Only contains :key binding

When a v-for has a :key binding, if the interpolation expression only accesses the :key binding without referencing other variables, the expression result should remain constant. Therefore, it only needs to be executed once during v-for rendering and doesn't need to be re-executed in every renderEffect.

2. Only performs === comparison with :key binding

When a v-for has a :key binding, if the mutable part of the expression is in the form of x === y where one side is the :key binding and the other is an external variable from outside the v-for, this expression can be treated as a selector. The v-for will maintain a key-value map between the external variable and the :key.

Whenever the external variable changes, the v-for will selectively execute the render effect for specific v-for items based on the previous and new values of the external variable.

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commit: 5f8441d