Potential fix for code scanning alert no. 1: Incomplete string escaping or encoding

[jamespepper81]

Potential fix for https://github.com/BitSleuthAI/Wallet/security/code-scanning/1

In general, the way to fix this is to avoid using String.prototype.replace with a plain string when you intend to remove all occurrences of a character or pattern. Instead, use a regular expression with the g (global) flag, or a purpose-built parser that enforces and strips the expected syntax. This ensures there are no leftover meta-characters and removes the ambiguity that static analysis tools complain about.

For this specific case, the function is parsing BIP32 path components like "0'". The intent is to remove any ' characters before calling parseInt. The minimal, behavior-preserving change is to switch from part.replace("'", '') to part.replace(/'/g, ''), which removes all ' characters from the segment. This maintains the current logic but makes it correct even if a segment contains more than one '. No additional imports are needed, and no other parts of services/simple-bip32.ts need modifications.

Concretely, in services/simple-bip32.ts, inside the derivePath method of SimpleBIP32Node, update line 50 so that part.replace("'", '') becomes part.replace(/'/g, '').

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