Fix Chrome compatibility data of ServiceWorkerContainer.getRegistrations

[kenrick95]

The old table at MDN page states that it is only supported on Chrome 45 onwards

This error has been there since initial PR #1011

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[jpmedley]

He's right. Here's the commit that removed the runtime flag. It's in 45. The actual implementation itself was also in 45, in case you're curious.

I looked it up because the old tables are a secondary source and should always be viewed with suspicion.

[ddbeck]

Just to be clear of your meaning, @jpmedley, you mean that @kenrick95 is right and the original table was wrong?

[jpmedley]

Changing it to 45 is the correct action, not because the original table says so, but because the commits I linked to say so.

[ddbeck]

Thanks for this PR and welcome to BCD, @kenrick95! Looks good! 🎉