Merge branch 'rs/pcre-invalid-utf8-fix-fix'

Workaround we have for versions of PCRE2 before their version 10.36 were in effect only for their versions newer than 10.36 by mistake, which has been corrected. * rs/pcre-invalid-utf8-fix-fix: grep: fix triggering PCRE2_NO_START_OPTIMIZE workaround