Fix UTF-8 encoding issue in integrated terminal

- Set LANG and LC_ALL environment variables to en_US.UTF-8
- Resolves Encoding::CompatibilityError in Ruby/CocoaPods commands
- Ensures consistent UTF-8 encoding across all terminal sessions

This change addresses the terminal encoding issue where commands like
'pod install' would fail due to incompatible character encoding. The
fix ensures all integrated terminals are initialized with proper
UTF-8 locale settings.

Author: mr-ryan-james

src/integrations/terminal/ExecaTerminalProcess.ts

@@ -40,6 +40,12 @@ export class ExecaTerminalProcess extends BaseTerminalProcess {
 				shell: true,
 				cwd: this.terminal.getCurrentWorkingDirectory(),
 				all: true,
+				env: {
+					...process.env,
+					// Ensure UTF-8 encoding for Ruby, CocoaPods, etc.
+					LANG: "en_US.UTF-8",
+					LC_ALL: "en_US.UTF-8",
+				},
 			})`${command}`
 
 			this.pid = subprocess.pid