Exposed the recursion limit value as a config option (#12308)

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# Description
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Closes #12253.

Exposes the option as "recursion_limit" under config.

# User-Facing Changes
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The config file now has a new option!

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Nothing else...? Do let me know if there's something I've missed!

crates/nu-utils/src/sample_config/default_config.nu

@@ -238,6 +238,7 @@ $env.config = {
     render_right_prompt_on_last_line: false # true or false to enable or disable right prompt to be rendered on last line of the prompt.
     use_kitty_protocol: false # enables keyboard enhancement protocol implemented by kitty console, only if your terminal support this.
     highlight_resolved_externals: false # true enables highlighting of external commands in the repl resolved by which.
+    recursion_limit: 50 # the maximum number of times nushell allows recursion before stopping it
 
     plugins: {} # Per-plugin configuration. See https://www.nushell.sh/contributor-book/plugins.html#configuration.