[ruff] Stabilize map-int-version-parsing (RUF048) (#16653)

Summary
--

Stabilizes RUF048 and moves its test to the right place. The docs look
good.

Test Plan
--

0 closed or open issues. There was 1 [PR] related to an extension to the
rule, but it was closed without comment.

[PR]: https://github.com/astral-sh/ruff/pull/14701

crates/ruff_linter/src/codes.rs

@@ -1003,7 +1003,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Ruff, "045") => (RuleGroup::Preview, rules::ruff::rules::ImplicitClassVarInDataclass),
         (Ruff, "046") => (RuleGroup::Stable, rules::ruff::rules::UnnecessaryCastToInt),
         (Ruff, "047") => (RuleGroup::Preview, rules::ruff::rules::NeedlessElse),
-        (Ruff, "048") => (RuleGroup::Preview, rules::ruff::rules::MapIntVersionParsing),
+        (Ruff, "048") => (RuleGroup::Stable, rules::ruff::rules::MapIntVersionParsing),
         (Ruff, "049") => (RuleGroup::Preview, rules::ruff::rules::DataclassEnum),
         (Ruff, "051") => (RuleGroup::Preview, rules::ruff::rules::IfKeyInDictDel),
         (Ruff, "052") => (RuleGroup::Preview, rules::ruff::rules::UsedDummyVariable),

crates/ruff_linter/src/rules/ruff/mod.rs

@@ -88,6 +88,8 @@ mod tests {
     #[test_case(Rule::NeedlessElse, Path::new("RUF047_for.py"))]
     #[test_case(Rule::NeedlessElse, Path::new("RUF047_while.py"))]
     #[test_case(Rule::NeedlessElse, Path::new("RUF047_try.py"))]
+    #[test_case(Rule::MapIntVersionParsing, Path::new("RUF048.py"))]
+    #[test_case(Rule::MapIntVersionParsing, Path::new("RUF048_1.py"))]
     #[test_case(Rule::IfKeyInDictDel, Path::new("RUF051.py"))]
     #[test_case(Rule::UsedDummyVariable, Path::new("RUF052.py"))]
     #[test_case(Rule::FalsyDictGetFallback, Path::new("RUF056.py"))]
@@ -420,8 +422,6 @@ mod tests {
         Ok(())
     }
 
-    #[test_case(Rule::MapIntVersionParsing, Path::new("RUF048.py"))]
-    #[test_case(Rule::MapIntVersionParsing, Path::new("RUF048_1.py"))]
     #[test_case(Rule::UnrawRePattern, Path::new("RUF039.py"))]
     #[test_case(Rule::UnrawRePattern, Path::new("RUF039_concat.py"))]
     #[test_case(Rule::UnnecessaryRegularExpression, Path::new("RUF055_0.py"))]