add rendered and json error messages in try/catch (#14082)

# Description

This PR adds a couple more options for dealing with try/catch errors. It
adds a `json` version of the error and a `rendered` version of the
error. It also respects the error_style configuration point.

![image](https://github.com/user-attachments/assets/32574f07-f511-40c0-8b57-de5f6f13a9c4)


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crates/nu-cmd-lang/src/core_commands/try_.rs

@@ -107,7 +107,11 @@ fn run_catch(
 
     if let Some(catch) = catch {
         stack.set_last_error(&error);
-        let error = error.into_value(span);
+        let fancy_errors = match engine_state.get_config().error_style {
+            nu_protocol::ErrorStyle::Fancy => true,
+            nu_protocol::ErrorStyle::Plain => false,
+        };
+        let error = error.into_value(span, fancy_errors);
         let block = engine_state.get_block(catch.block_id);
         // Put the error value in the positional closure var
         if let Some(var) = block.signature.get_positional(0) {