Rollup merge of #92420 - dtolnay:patrange, r=Mark-Simulacrum

Fix whitespace in pretty printed PatKind::Range

Follow-up to #92238 fixing one of the FIXMEs.

```rust
macro_rules! repro {
    ($pat:pat) => {
        stringify!($pat)
    };
}

fn main() {
    println!("{}", repro!(0..=1));
}
```

Before: `0 ..=1`
After: `0..=1`

The canonical spacing applied by rustfmt has no space after the lower expr. Rustc's parser diagnostics also do not put a space there:

df96fb166f/compiler/rustc_parse/src/parser/pat.rs (L754)

compiler/rustc_ast_pretty/src/pprust/state.rs

@@ -2516,7 +2516,6 @@ impl<'a> State<'a> {
             PatKind::Range(ref begin, ref end, Spanned { node: ref end_kind, .. }) => {
                 if let Some(e) = begin {
                     self.print_expr(e);
-                    self.space();
                 }
                 match *end_kind {
                     RangeEnd::Included(RangeSyntax::DotDotDot) => self.word("..."),