fix: improve indexed each array reconcilation

[trueadm]

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🦋 Changeset detected

Latest commit: 0a05697

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[dummdidumm]

Could you give a bit of explanation why this change makes sense / it's safe to remove this stuff? @Rich-Harris should probably also have a look at this.

[trueadm]

It's likely due to the fact that we've fixed other parts of the reconcilation around each blocks. :) I can't honestly remember all this code from last year (cold brain atm too), but we can see if this change breaks other things first. I've tried locally and it all seems fine though!

Update: I went through all the old test cases that the original logic aimed to fix and they're all working now without it. The big changes in architecture seem be around the fact we now associate the reconciliation with a single change to the array, whilst previously it was only when the array itself changed. So that looks to have been the correct fix meaning this PR can remove the unnecessary lazy property logic entirely.