Add deepEqual check for getSnapshot collections

[LukasMod]

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Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

MacOS: Desktop

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[VickyStash]

Do we do deepEqual of the whole collection? But the collections can be HUGE, right? Will it be performant enough?

[VickyStash]

Hey, can you clarify what is the cachedResult[0] and oldResultRef[0] in this case?

[LukasMod]

[0] is data, [1] is metadata. I changed it to whole array in my current experiments. I opened new PR

[LukasMod]

Close this in favor of #718