Auto merge of #86271 - GuillaumeGomez:fix-font-weight, r=jsha

Fix font weight

Fixes #86256.

I realized that the only cases where we actually needed to have bold text was inside `impl-items`.

cc `@camelid`
r? `@jsha`

src/test/rustdoc-gui/font-weight.goml

@@ -0,0 +1,7 @@
+goto: file://|DOC_PATH|/lib2/struct.Foo.html
+// This test checks that the font weight is correctly applied.
+assert: ("//*[@class='docblock type-decl']//a[text()='Alias']", {"font-weight": "400"})
+assert: ("//*[@class='structfield small-section-header']//a[text()='Alias']", {"font-weight": "400"})
+assert: ("#method\.a_method > code", {"font-weight": "600"})
+assert: ("#associatedtype\.X > code", {"font-weight": "600"})
+assert: ("#associatedconstant\.Y > code", {"font-weight": "600"})

src/test/rustdoc-gui/sidebar.goml

@@ -31,7 +31,10 @@ assert: (".sidebar > .location", "Crate lib2")
 assert: (".sidebar-elems > .crate > ul > li > a.current", "lib2")
 // We now go to the "foobar" function page.
 assert: (".sidebar-elems > .items > ul > li:nth-child(1)", "Modules")
-assert: (".sidebar-elems > .items > ul > li:nth-child(2)", "Functions")
+assert: (".sidebar-elems > .items > ul > li:nth-child(2)", "Structs")
+assert: (".sidebar-elems > .items > ul > li:nth-child(3)", "Traits")
+assert: (".sidebar-elems > .items > ul > li:nth-child(4)", "Functions")
+assert: (".sidebar-elems > .items > ul > li:nth-child(5)", "Type Definitions")
 assert:	("#functions + table td > a", "foobar")
 click: "#functions + table td > a"
 

src/test/rustdoc-gui/src/lib2.rs

@@ -9,3 +9,23 @@ pub mod module {
 }
 
 pub fn foobar() {}
+
+pub type Alias = u32;
+
+pub struct Foo {
+    pub x: Alias,
+}
+
+impl Foo {
+    pub fn a_method(&self) {}
+}
+
+pub trait Trait {
+    type X;
+    const Y: u32;
+}
+
+impl Trait for Foo {
+    type X = u32;
+    const Y: u32 = 0;
+}