Duplicate import aliases bug

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```
import { t as $t, t } from '@lingui/macro'

t`Hello`

$t`Hello`
```

Only the last `t` variable will be registered in `imports_id_map`

Maybe need to add a secondary data structure `importsBindingMap`?

```
// export name -> local name
importsIdMap: Map
// local name -> export name
importsIdMapInverted: Map

// local name -> ast node
importsBindingMap: Map>
```

If swc has babel's `scope.getBinding`, it can maintain the importsBindingMap during the registration phase.

Please extend swc's capabilities～

Start at the import registration logic and the imports_id_map behavior described in the issue, reproducing the example with both t and $t aliases. Trace how bindings are registered and define completion as both local names remaining discoverable instead of only the last t binding; no file or test path is named in the issue.

Written by the indexing model from the issue text.