Default from-text stub generation in build

This change defaults Java stubs to be generated from API text files
during build. Using the `--build-from-source-stubs` flag, users can
toggle between the feature.

Test: m nothing && verify ninja path exists between android_stubs_current and android_stubs_current.from-text, and does not exist between android_stubs_current.from-source, m nothing --build-from-source-stub && verify the opposite
Bug: 274805756
Change-Id: I28834f92c1b1311e3fe0a71a6ea9e8ec2e278d7e
diff --git a/cmd/soong_build/main.go b/cmd/soong_build/main.go
index d20847b..53f5d80 100644
--- a/cmd/soong_build/main.go
+++ b/cmd/soong_build/main.go
@@ -84,7 +84,7 @@
 	flag.BoolVar(&cmdlineArgs.BazelMode, "bazel-mode", false, "use bazel for analysis of certain modules")
 	flag.BoolVar(&cmdlineArgs.BazelModeStaging, "bazel-mode-staging", false, "use bazel for analysis of certain near-ready modules")
 	flag.BoolVar(&cmdlineArgs.UseBazelProxy, "use-bazel-proxy", false, "communicate with bazel using unix socket proxy instead of spawning subprocesses")
-	flag.BoolVar(&cmdlineArgs.BuildFromTextStub, "build-from-text-stub", false, "build Java stubs from API text files instead of source files")
+	flag.BoolVar(&cmdlineArgs.BuildFromSourceStub, "build-from-source-stub", false, "build Java stubs from source files instead of API text files")
 	flag.BoolVar(&cmdlineArgs.EnsureAllowlistIntegrity, "ensure-allowlist-integrity", false, "verify that allowlisted modules are mixed-built")
 	// Flags that probably shouldn't be flags of soong_build, but we haven't found
 	// the time to remove them yet