Fix missing installed_plugins field in version command (#14488)

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# Description
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In #14418 I added the `plugin` feature to the crate `nu-cmd-lang`. I
forgot to include that feature in the `nushell/plugin` feature. This
caused the `version` command to not have the `installed_plugins` field.
With this PR I fixed that.

# User-Facing Changes
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None 😇

# Tests + Formatting
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- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

Running `version` shows `installed_plugins` again.

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That should be it.

Cargo.toml

@@ -251,13 +251,18 @@ tempfile = { workspace = true }
 
 [features]
 plugin = [
-  "nu-plugin-engine",
+  # crates
   "nu-cmd-plugin",
+  "nu-plugin-engine",
+
+  # features
   "nu-cli/plugin",
-  "nu-parser/plugin",
+  "nu-cmd-lang/plugin",
   "nu-command/plugin",
-  "nu-protocol/plugin",
   "nu-engine/plugin",
+  "nu-engine/plugin",
+  "nu-parser/plugin",
+  "nu-protocol/plugin",
 ]
 
 default = [