[dcl.struct.bind] Fix tuple-like binding index to use SB_i instead of v_i#8803

tkoeppe merged 1 commit intocplusplus:maincplusplus/draft:mainfrom

abhinavagarwal07:fix-struct-bind-vi-to-SBiabhinavagarwal07/draft:fix-struct-bind-vi-to-SBiCopy head branch name to clipboard