[js-legacy] Fix program check in amountToUiAmount helper functions

[gitteri]

Update Program ID Matching Logic

Problem

Currently, the code uses strict equality (===) to compare program IDs with TOKEN_PROGRAM_ID and TOKEN_2022_PROGRAM_ID. This can lead to false negatives when comparing PublicKey instances, as they may have different object references even when representing the same underlying public key data.

Solution

Replace the strict equality checks with PublicKey.equals() method, which properly compares the underlying public key data rather than object references.

Changes

• Updated program ID validation in amountToUiAmountForMintWithoutSimulation
• Updated program ID validation in uiAmountToAmountForMintWithoutSimulation

Testing

• Verified that the changes correctly identify both Token Program and Token-2022 Program IDs
• Confirmed that the validation works with different PublicKey instances representing the same program ID

[joncinque]

Ah, right

[joncinque]

Wait, hold on, this means that token_2022 and token will throw

[joncinque]

The tests seem to agree that the code was fine before 😅

[gitteri]

Sorry @joncinque you're absolutely right. I ran into this issue when trying to use this helper in an app and realized the actual issue is that the helper uses === equality check which doesn't work with the underlying BN data type.

[joncinque]

Ah ok, this makes sense, thanks!