[build] Don't build unittests (via indexer files) for GRD target

We make the indexer tsconfig part of `devtools_all_files` which is
enought to include it in the indexer chrome build.

Building DevTools via

`autoninja -C out/Release :devtools_frontend_resources`

will now build only files actually included in the GRD bundle and
required to run the DevTools frontend.

Note: We don't include it in `data_deps` as the indexer files
don't need to be copied onto swarming bots when running web
tests.

[email protected]

Fixed: 382387670
Change-Id: I3235140202f25cee4e4e945ed209afb6e88c748c
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6450694
Commit-Queue: Philip Pfaffe <[email protected]>
Auto-Submit: Simon Zünd <[email protected]>
Reviewed-by: Philip Pfaffe <[email protected]>

Author: szuend

BUILD.gn

@@ -29,7 +29,7 @@ group("devtools_all_files") {
                 "front_end:web_test_resources",
                 "test",
               ]
-
+  deps = [ ":frontend_indexer_tsconfig" ]
   public_deps = [ "front_end/ui/components/docs" ]
 }
 
@@ -38,7 +38,6 @@ group("devtools_frontend_resources") {
   deps = [
     ":assert_grd",
     ":assert_third_party_readmes",
-    ":frontend_indexer_tsconfig",
   ]
 }