rustdoc search: rank aliases lower than exact matches

[lolbinarycat]

will fix #140968

[rust-log-analyzer]

The job aarch64-gnu-llvm-19-1 failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

---- [rustdoc-js] tests/rustdoc-js/doc-alias.rs stdout ----

error: rustdoc-js test failed!
status: exit status: 1
command: "/usr/bin/node" "/checkout/src/tools/rustdoc-js/tester.js" "--doc-folder" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/rustdoc-js/doc-alias" "--crate-name" "doc_alias" "--test-file" "/checkout/tests/rustdoc-js/doc-alias.js"
--- stdout -------------------------------
Testing /checkout/tests/rustdoc-js/doc-alias.js ... FAILED
[ query `UnionItem`]==> '{"path":"doc_alias::Union","name":"union_item","desc":"Doc for <code>Union::union_item</code>","href":"../doc_alias/union.Union.html#structfield.union_item"}' was supposed to be before '{"crate":"doc_alias","name":"Union","path":"doc_alias","descShard":{"crate":"doc_alias","shard":0,"start":0,"len":27,"promise":{}},"descIndex":11,"exactPath":"doc_alias","ty":20,"type":null,"is_alias":true,"bitIndex":12,"implDisambiguator":null,"desc":"Doc for <code>Union</code>","alias":"UnionItem","displayPath":"<span>doc_alias::</span>","fullPath":"<span>doc_alias::</span>Union","href":"../doc_alias/union.Union.html"}'
------------------------------------------
stderr: none


---- [rustdoc-js] tests/rustdoc-js/non-english-identifier.rs stdout ----

error: rustdoc-js test failed!
status: exit status: 1
command: "/usr/bin/node" "/checkout/src/tools/rustdoc-js/tester.js" "--doc-folder" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/rustdoc-js/non-english-identifier" "--crate-name" "non_english_identifier" "--test-file" "/checkout/tests/rustdoc-js/non-english-identifier.js"
--- stdout -------------------------------
Testing /checkout/tests/rustdoc-js/non-english-identifier.js ... FAILED
[ query `加法`]==> '{"name":"加法","path":"non_english_identifier","href":"../non_english_identifier/trait.加法.html","desc":"Add"}' was supposed to be before '{"crate":"non_english_identifier","name":"add","path":"non_english_identifier","descShard":{"crate":"non_english_identifier","shard":0,"start":0,"len":5,"promise":{}},"descIndex":2,"exactPath":"non_english_identifier","ty":7,"type":{"inputs":[{"id":12,"name":"usize","ty":1,"path":"non_english_identifier","exactPath":"non_english_identifier","generics":[],"bindings":{},"unboxFlag":false},{"id":12,"name":"usize","ty":1,"path":"non_english_identifier","exactPath":"non_english_identifier","generics":[],"bindings":{},"unboxFlag":false}],"output":[{"id":12,"name":"usize","ty":1,"path":"non_english_identifier","exactPath":"non_english_identifier","generics":[],"bindings":{},"unboxFlag":false}],"where_clause":[]},"is_alias":true,"bitIndex":3,"implDisambiguator":null,"desc":"","alias":"加法","displayPath":"<span>non_english_identifier::</span>","fullPath":"<span>non_english_identifier::</span>add","href":"../non_english_identifier/fn.add.html"}'
OK
------------------------------------------
stderr: none