IEP-1644 Release 3.7.0 regression testing: Terminal does not work (#1325)

* fix: avoiding duplicate PATH variable

Author: sigmaaa

bundles/com.espressif.idf.core/src/com/espressif/idf/core/util/IDFUtil.java

@@ -900,7 +900,9 @@ public static Map<String, String> getSystemEnv()
 		env.put(IDFCorePreferenceConstants.IDF_TOOLS_PATH, idfToolsPath);
 
 		// Merge Homebrew bin paths into PATH
-		String existingPath = env.getOrDefault("PATH", ""); //$NON-NLS-1$ //$NON-NLS-2$
+		// Windows may use "Path" while Unix uses "PATH"
+		String keyPath = env.containsKey("PATH") ? "PATH" : "Path"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
+		String existingPath = env.getOrDefault(keyPath, ""); //$NON-NLS-1$
 		StringBuilder newPath = new StringBuilder();
 
 		String[] brewPaths = { "/usr/local/bin", "/opt/homebrew/bin" }; //$NON-NLS-1$ //$NON-NLS-2$
@@ -915,7 +917,7 @@ public static Map<String, String> getSystemEnv()
 
 		// Append the original PATH at the end
 		newPath.append(existingPath);
-		env.put("PATH", newPath.toString()); //$NON-NLS-1$
+		env.put(keyPath, newPath.toString()); // $NON-NLS-1$
 
 		return env;
 	}