fix(misc): fix move generator when there is a list export in the same file as path to update

[mgawrys-recruitee]

closes #22030
It seems like moduleIdentifier is undefined for export lists that are not a reexport. moduleSpecifier is defined for import declaration, but optional for ExportDeclaration
https://github.com/microsoft/TypeScript/blob/2d70b57df4b64a3daef252abb014562e6ccc8f3c/src/compiler/types.ts#L3701

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• nx affected --targets=e2e,e2e-ci --base=48e8752b7a0b9796f281a4cfbde5304900d4161b --head=7001f1a254df0238daa222282856dcb7cd431aa2 --parallel=1
• nx affected --targets=lint,test,build --base=48e8752b7a0b9796f281a4cfbde5304900d4161b --head=7001f1a254df0238daa222282856dcb7cd431aa2 --parallel=3
• nx run-many -t check-imports check-commit check-lock-files check-codeowners documentation --parallel=1 --no-dte
• nx-cloud record -- nx format:check --base=48e8752b7a0b9796f281a4cfbde5304900d4161b --head=7001f1a254df0238daa222282856dcb7cd431aa2
• nx documentation --no-dte
• nx affected -t e2e-macos --parallel=1 --base=48e8752b7a0b9796f281a4cfbde5304900d4161b --head=7001f1a254df0238daa222282856dcb7cd431aa2

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[mgawrys-recruitee]

It was fixed in #21715

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