[build] Compile compiler with optimizations in fast mksnapshot mode

This changes debug builds [1] to compile src/compiler sources twice:

1. with optimizations, used in mksnapshot to improve performance.
2. without optimizations, linked into d8 and v8 libraries.

While this adds ~200 compilation targets, these can be built in parallel
and should not add much time overall.

This brings mksnapshot runtime back down to 11 seconds on my machine.

[1] The full condition is:
    is_debug && !v8_optimized_debug && v8_enable_fast_mksnapshot

Cq-Include-Trybots: luci.chromium.try:android_arm64_dbg_recipe
Cq-Include-Trybots: luci.chromium.try:fuchsia_x64
Bug: v8:8767
Change-Id: Iac57bf8331395d9eda9be5d192e8eeeded182ae6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1532335
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60713}

gni/v8.gni

@@ -156,21 +156,21 @@ template("v8_source_set") {
                              "configs",
                              "remove_configs",
                            ])
+    configs -= v8_remove_configs
+    configs += v8_add_configs
     if (defined(invoker.remove_configs)) {
       configs -= invoker.remove_configs
     }
     configs += invoker.configs
-    configs -= v8_remove_configs
-    configs += v8_add_configs
   }
 }
 
 template("v8_header_set") {
   jumbo_source_set(target_name) {
     forward_variables_from(invoker, "*", [ "configs" ])
-    configs += invoker.configs
     configs -= v8_remove_configs
     configs += v8_add_configs
+    configs += invoker.configs
   }
 }
 
@@ -182,12 +182,12 @@ template("v8_executable") {
                              "configs",
                              "remove_configs",
                            ])
+    configs -= v8_remove_configs
+    configs += v8_add_configs
     if (defined(invoker.remove_configs)) {
       configs -= invoker.remove_configs
     }
     configs += invoker.configs
-    configs -= v8_remove_configs
-    configs += v8_add_configs
     if (is_linux) {
       # For enabling ASLR.
       ldflags = [ "-pie" ]
@@ -210,9 +210,9 @@ template("v8_executable") {
 template("v8_component") {
   component(target_name) {
     forward_variables_from(invoker, "*", [ "configs" ])
-    configs += invoker.configs
     configs -= v8_remove_configs
     configs += v8_add_configs
+    configs += invoker.configs
   }
 }
 
@@ -220,9 +220,9 @@ template("v8_static_library") {
   static_library(target_name) {
     complete_static_lib = true
     forward_variables_from(invoker, "*", [ "configs" ])
-    configs += invoker.configs
     configs -= v8_remove_configs
     configs -= [ "//build/config/compiler:thin_archive" ]
     configs += v8_add_configs
+    configs += invoker.configs
   }
 }