[FIX] Failsafe env["TOOLS"] variable getter

Author: why-try313

SCsub

@@ -5,6 +5,7 @@ Import('env')
 Import('env_modules')
 env_module = env_modules.Clone()
 JS_ENGINE = 'quickjs'
+TOOLS = env.get('TOOLS');
 
 def open_file(path, mode):
 	if platform.python_version() > '3':
@@ -41,7 +42,7 @@ if JS_ENGINE == 'quickjs':
 	env_module.Append(CPPPATH=["quickjs/quickjs"])
 	# env_module.Append(CXXFLAGS=["-std=c++20"])
 	# env_module.Append(CCFLAGS=["-std=c++20"])
-	if env['tools']:
+	if TOOLS:
 		env_module.add_source_files(env.modules_sources, 'tools/editor_tools.cpp')
 	env_module.add_source_files(env.modules_sources, 'quickjs/quickjs_builtin_binder.gen.cpp')
 	env_module.add_source_files(env.modules_sources, 'quickjs/*.cpp')
@@ -60,7 +61,7 @@ sources = [
 	'misc/godot.binding_script.gen.cpp',
 ]
 
-if env['tools']:
+if TOOLS:
 	base_text = '/* THIS FILE IS GENERATED DO NOT EDIT */\n#include "editor_tools.h"\nString JavaScriptPlugin::{} = \n{};'
 	tool_fns = {"tools/godot.d.ts.gen.cpp": ("BUILTIN_DECLARATION_TEXT", dump_text_file_to_cpp("misc/godot.d.ts")),
 		"tools/tsconfig.json.gen.cpp": ("TSCONFIG_CONTENT", dump_text_file_to_cpp("misc/tsconfig.json")),