Fix escaped '%' check when building Printf.Format#37470
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Addresses #32859 (comment). The issue here was advancing the parsing position too far when an escaped `'%'` was encountered after the first format specifier. If an escaped `'%'` was then followed by another specifier, it was ignored due to being classified as an "escaped" character.
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Addresses
#32859 (comment).
The issue here was advancing the parsing position too far when an
escaped
'%'was encountered after the first format specifier. If anescaped
'%'was then followed by another specifier, it was ignored dueto being classified as an "escaped" character.