Add delimiters around the "Enable the debug feature to see the name" message (#22532)

# Objective

A user on Discord was confused by this warning, assuming that the
message must be corrupted in some way:

`
warning[B0004]: Entity 290v0 with the Enable the debug feature to see
the name component has a parent (289v0 entity) without Enable the debug
feature to see the name.
This will cause inconsistent behaviors! See:
https://bevy.org/learn/errors/b0004
`

## Solution

Add some delimiters to the `FEATURE_DISABLED` string. This makes the
warning much more legible:

`
warning[B0004]: Entity 290v0 with the <Enable the debug feature to see
the name> component has a parent (289v0 entity) without <Enable the
debug feature to see the name>.
This will cause inconsistent behaviors! See:
https://bevy.org/learn/errors/b0004
`

Author: ickshonpe

crates/bevy_utils/src/debug_info.rs

@@ -8,7 +8,7 @@ use core::ops::Deref;
 use disqualified::ShortName;
 
 #[cfg(not(feature = "debug"))]
-const FEATURE_DISABLED: &str = "Enable the debug feature to see the name";
+const FEATURE_DISABLED: &str = "<Enable the debug feature to see the name>";
 
 /// Wrapper to help debugging ECS issues. This is used to display the names of systems, components, ...
 ///