Set the initial capacity of ArrayLists in getAllUnreadResults()

[kcooney]

If there are more than 10 queued results, PhotonCamera.getAllUnreadResults() would resize two arrays at least once each.

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Merge checklist:

• Pull Request title is short, imperative summary of proposed changes
• The description documents the what and why
• If this PR changes behavior or adds a feature, user documentation is updated
• If this PR touches photon-serde, all messages have been regenerated and hashes have not changed unexpectedly
• If this PR touches configuration, this is backwards compatible with settings back to v2024.3.1
• If this PR touches pipeline settings or anything related to data exchange, the frontend typing is updated
• If this PR addresses a bug, a regression test for it is added

[Gold856]

Love reducing allocations. I wonder if there's any other places we could do that.

[kcooney]

Love reducing allocations. I wonder if there's any other places we could do that.

I found a bunch. Sent out #2080