update the defaults for shell_integration (#13929)

# Description

This PR updates the shell_integration defaults so that they work as
described in default_config.nu even when there is no config.nu file.

closes #13924

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crates/nu-protocol/src/config/shell_integration.rs

@@ -16,13 +16,13 @@ pub struct ShellIntegrationConfig {
 impl Default for ShellIntegrationConfig {
     fn default() -> Self {
         Self {
-            osc2: false,
-            osc7: false,
-            osc8: false,
+            osc2: true,
+            osc7: true,
+            osc8: true,
             osc9_9: false,
-            osc133: false,
-            osc633: false,
-            reset_application_mode: false,
+            osc133: true,
+            osc633: true,
+            reset_application_mode: true,
         }
     }
 }