BIP-371: use canonical PSBT_IN_TAP_KEY_SIG in invalid test titles #2009

1. 
   radik878 commented at 7:28 pm on October 18, 2025: contributor

   Correct two test-case headings that incorrectly used PSBT_KEY_PATH_SIG. The canonical Taproot key-spend field name is PSBT_IN_TAP_KEY_SIG (0x13) per BIP-371/BIP-174, so using PSBT_KEY_PATH_SIG was inconsistent and potentially confusing.
2. BIP-371: use canonical PSBT_IN_TAP_KEY_SIG in invalid test titles 2bdb5ec72f
3. jonatack added the label Typo-to-be-collected on Oct 19, 2025
4. 
   jonatack commented at 9:58 pm on October 19, 2025: member

   lgtm, cc BIP author @achow101 for yay or nay

Contributors
radik878 jonatack

Labels
Typo-to-be-collected