[Bug]: updateAuthority can change share of verified creators

[serejke]

Which package is this bug report for?

token-metadata

Which Type of Package is this bug report for?

Rust Contract

Issue description

If an NFT has several creators, the updateAuthority is able to change their shares to any distribution where sum of shares is 100, even making some creator's share 0.

The documentation should explicitly mention that.

Example: this NFT has 3 verified creators. Their shares used to be 0, 90, 10, and I was able to update them to 0, 100, 0. For my use case, this is fine and desired, but I see it might cause a confusion for NFT owners.

Relevant log output

No response

Priority this issue should have

Low (slightly annoying)