reflect: add {methodIter.Seq,methodIter2.Seq2} test cases for {CanSeq,CanSeq2}

[callthingsoff]

For #71874.

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Message from Gopher Robot:

Patch Set 1:

(1 comment)

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This PR (HEAD: 5faab7e) has been imported to Gerrit for code review.

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This PR (HEAD: 90d63e8) has been imported to Gerrit for code review.

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Message from Ian Lance Taylor:

Patch Set 5: Commit-Queue+1

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Message from Go LUCI:

Patch Set 5:

Dry run: CV is trying the patch.

Bot data: {"action":"start","triggered_at":"2025-02-22T15:43:42Z","revision":"0f42eacc75bc8d688cc2aee710b6200cd74328c2"}

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Message from Ian Lance Taylor:

Patch Set 5: -Commit-Queue

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Message from Go LUCI:

Patch Set 5:

This CL has passed the run

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Message from Go LUCI:

Patch Set 5: LUCI-TryBot-Result+1

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