mihomo v1.19.23：新增 xhttp 订阅转换与 grpc 选项

What's Changed

• d131991 feat: add reuse-settings support for vless xhttp (aka xmux) (#2670) by @Nemu-x
• f3b0581 feat: convert support xhttp subscriptions (#2671) by @legiz-ru
• 4f5ad97 feat: convert support xhttp reuse-settings (aka xmux) (#2675) by @legiz-ru
• 7709554 feat: add max-connections, min-streams and max-streams options to grpc-opts by @wwqgtxx
• 7f6ac1d feat: support sc-stream-up-server-secs and no-sse-header for xhttp listener by @wwqgtxx
• 8b37e99 feat: support sc-max-each-post-bytes for xhttp client and listener by @wwqgtxx
• caacf7a feat: add max-connections, min-streams and max-streams options to trusttunnel client by @wwqgtxx
• Updated to the Golang 1.26.2 toolchain, fixing some security CVEs.

BUG & Fix

• 49e5854 fix: CVE-2026-32283 for crypto/tls by @wwqgtxx
• 5d8e2d2 fix: gun reader error handling by @wwqgtxx

Maintenance

• 0cb5141 chore: respect mode restrictions for xhttp listener by @wwqgtxx
• 3db64d0 chore: add get tls connection state function in component/tls by @wwqgtxx
• 428b7ad chore: remove unneeded io.ReadFull in gun reader by @wwqgtxx
• 4730f67 chore: update sing-tun by @wwqgtxx
• 5e8bd85 chore: skip kcptun test on windows go1.20 by @wwqgtxx
• 6687ae1 chore: better stream-up server implement by @wwqgtxx
• 6a2b0db chore: optimized sudoku read/write performance (#2678) by @saba-futai
• 78e4b84 chore: remove unused code in h2ConnWrapper by @wwqgtxx
• 7923f1a chore: rebuild reuseManager code by @wwqgtxx
• 871e6d1 chore: rebuild xhttp inbound test by @wwqgtxx
• 979305d chore: cleanup condition for authentication by @wwqgtxx
• 97c526f chore: add TLSConn interface and not depend on *tls.Conn type for our net/http fork by @wwqgtxx
• 98b2499 chore: align internal logic by @wwqgtxx
• 9f38a26 chore: follow upstream server's keepalive settings for http proxy by @wwqgtxx
• c48f592 chore: merge duplicate code by @wwqgtxx
• e5f05aa chore: don't need to close connection if content length is positive numbers for http proxy by @wwqgtxx

Full Changelog: v1.19.23...v1.19.22