SCons: Keep exceptions and rtti on Android, iOS and HTML5 tools build

Those were disable to keep size small, and on Android avoid the dependency on the STL,
but for tools build (editor) this is not really a concern.

Note: as of today it's not possible to build tools=yes for those platforms, but this
change is one of the necessary steps to enable it.

Fixes #25262.

platform/android/detect.py

@@ -214,13 +214,14 @@ def configure(env):
     lib_sysroot = env["ANDROID_NDK_ROOT"] + "/platforms/" + env['ndk_platform'] + "/" + env['ARCH']
 
     ## Compile flags
-
-    if env['android_stl']:
+    # Disable exceptions and rtti on non-tools (template) builds
+    if env['tools'] or env['android_stl']:
         env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++/include"])
         env.Append(CPPFLAGS=["-isystem", env["ANDROID_NDK_ROOT"] + "/sources/cxx-stl/llvm-libc++abi/include"])
         env.Append(CXXFLAGS=['-frtti', "-std=gnu++14"])
     else:
         env.Append(CXXFLAGS=['-fno-rtti', '-fno-exceptions'])
+        # Don't use dynamic_cast, necessary with no-rtti.
         env.Append(CPPFLAGS=['-DNO_SAFE_CAST'])
 
     ndk_version = get_ndk_version(env["ANDROID_NDK_ROOT"])

platform/iphone/detect.py

@@ -115,10 +115,12 @@ def configure(env):
         env.Append(CPPFLAGS=['-DNEED_LONG_INT'])
         env.Append(CPPFLAGS=['-DLIBYUV_DISABLE_NEON'])
 
-    if env['ios_exceptions']:
-        env.Append(CCFLAGS=['-fexceptions'])
-    else:
-        env.Append(CCFLAGS=['-fno-exceptions'])
+    # Disable exceptions on non-tools (template) builds
+    if not env['tools']:
+        if env['ios_exceptions']:
+            env.Append(CCFLAGS=['-fexceptions'])
+        else:
+            env.Append(CCFLAGS=['-fno-exceptions'])
 
     ## Link flags
 

platform/javascript/detect.py

@@ -110,10 +110,12 @@ def configure(env):
     # once feasible also consider memory buffer size issues.
     env.Append(CPPDEFINES=['NO_THREADS'])
 
-    # These flags help keep the file size down.
-    env.Append(CCFLAGS=['-fno-exceptions', '-fno-rtti'])
-    # Don't use dynamic_cast, necessary with no-rtti.
-    env.Append(CPPDEFINES=['NO_SAFE_CAST'])
+    # Disable exceptions and rtti on non-tools (template) builds
+    if not env['tools']:
+        # These flags help keep the file size down.
+        env.Append(CCFLAGS=['-fno-exceptions', '-fno-rtti'])
+        # Don't use dynamic_cast, necessary with no-rtti.
+        env.Append(CPPDEFINES=['NO_SAFE_CAST'])
 
     if env['javascript_eval']:
         env.Append(CPPDEFINES=['JAVASCRIPT_EVAL_ENABLED'])