Create export declaration in Import_may_be_converted_to_a_default_import codefix when the original node has export modifier

[Andarist]

fixes #61167

[jakebailey]

I merged #61171 without noticing that this was also available to fix the same issue; this one seemingly fixes the bug by actually implementing it, though #61171 used a the right helper for detecting the modifier (so that could be done here).

[Andarist]

Jinx. I haven't seen the other PR :D I synced this now with main and used suggested helper

[typescript-bot]

With 6.0 out as the final release vehicle for this codebase, we're closing all PRs that don't fit the merge criteria for post-6.0 patches. If you think this was a mistake and this PR fits the post-6.0 patch criteria, please post to the 6.0 iteration issue with details (specifically, which PR and which patch criteria it satisfies).

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