Reland: [github] Enable TINT_ENABLE_INSTALL on CI

This ensures that the Tint executable is included in the prebuilt
binary releases.

This should be fixed now that the fuzzer targets are properly guarded.

No-Try: true
Change-Id: I2fe25183b5e2053fba7d8739c266e3ec34823740
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/327457
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>

.github/workflows/dawn-ci.cmake

diff --git a/.github/workflows/dawn-ci.cmake b/.github/workflows/dawn-ci.cmake
index 4c15886..0bfb4de 100644
--- a/.github/workflows/dawn-ci.cmake
+++ b/.github/workflows/dawn-ci.cmake
@@ -7,6 +7,7 @@
 endif ()
 set(DAWN_FETCH_DEPENDENCIES ON CACHE BOOL "")
 set(DAWN_ENABLE_INSTALL ON CACHE BOOL "")
+set(TINT_ENABLE_INSTALL ON CACHE BOOL "")
 if (CMAKE_SYTEM_NAME STREQUAL "Linux")
     # `sccache` seems effective only on linux.
     # for windows, we could look into `buildcache`