Ignore "From" when serializing a JsonPatchDocument for "add", "remove", "replace" and "test" operations

[akshay-zz]

{PR title}

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Summary of the changes (Less than 80 chars)

Description

Fixes #63862 (in this specific format)

[akshay-zz]

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[akshay-zz]

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[marcominerva]

@akshay-zz could you please close and reopen this PR so that the validation can re-run? Your fix is important and should be merged.

[martincostello]

Sorry, I thought I had permissions to do that, but turns out I can only close 😅

[marcominerva]

So, please @akshay-zz reopen it 😅

[akshay-zz]

I guess I don't have permission to reopen. I can push new commits to it and then open a new PR. @marcominerva

[marcominerva]

Yes, please go ahead. 💪

[akshay-zz]

#64457 @marcominerva . I'm not too confident about the PublicApi....txt changes. Please have a look