chore: Update build configurations for Linux, macOS, and Windows

configs/linux/mozconfig

@@ -23,7 +23,7 @@ if test "$ZEN_RELEASE"; then
     fi
 fi
 
-if test "$SURFER_COMPAT" = "1"; then
+if test "$SURFER_COMPAT" = "true"; then
     # Build for linux-i686
     ac_add_options --target=i686-pc-linux
 fi

configs/macos/mozconfig

@@ -6,7 +6,7 @@ ac_add_options --enable-install-strip
 export MOZ_MACBUNDLE_ID=${appId}
 export MOZ_MACBUNDLE_NAME="Zen Browser.app"
 
-if test "$SURFER_COMPAT" = "1"; then
+if test "$SURFER_COMPAT" = "true"; then
     export MOZ_PGO=1
     ac_add_options MOZ_PGO=1
     ac_add_options --target=x86_64-apple-darwin

configs/windows/mozconfig

@@ -9,7 +9,7 @@ if test "$ZEN_CROSS_COMPILING"; then
 
   #? https://bugzilla.mozilla.org/show_bug.cgi?id=1617793
   #? https://phabricator.services.mozilla.com/D170170
-  if test "$SURFER_COMPAT" = "1"; then
+  if test "$SURFER_COMPAT" = "true"; then
     ac_add_options --target=i686-pc-windows-msvc
   else
     ac_add_options --target=x86_64-pc-windows-msvc