Change nghttp2 link flags to support macOS

Previously '-l:nghttp2.a' was used to specify static linking with
nghttp2 and to stop the linker from linking dynamically with
libnghttp2.so. This way of linking is not supported on macOS. Instead,
add '--disable-shared' to prevent libnghttp2.so from even being
compiled. This way the linker will find the static library only and link
against it.

chrome/patches/libnghttp2-pc.patch

@@ -1,8 +0,0 @@
---- nghttp2-1.46.0-original/lib/libnghttp2.pc.in	2021-10-19 12:31:47.000000000 +0300
-+++ nghttp2-1.46.0/lib/libnghttp2.pc.in	2022-02-17 13:44:46.722604316 +0200
-@@ -31,3 +31,4 @@
- Version: @VERSION@
--Libs: -L${libdir} -lnghttp2
-+Libs: -L${libdir}
-+Libs.private: -l:libnghttp2.a
- Cflags: -I${includedir}