Fix: HTTPHdr host cache invalidation when Host header modified (#12768)#12796

bryancall wants to merge 1 commit intoapache:9.2.xapache/trafficserver:9.2.xfrom

bryancall:fix-host_header_cache_invalidation-9.2.xbryancall/trafficserver:fix-host_header_cache_invalidation-9.2.xCopy head branch name to clipboard