tests: move tests/ui/issues/issue-39175.rs under suggestions/ and rename

Author: jieyouxu

src/tools/tidy/src/issues.txt

@@ -2204,7 +2204,6 @@ ui/issues/issue-3895.rs
 ui/issues/issue-38954.rs
 ui/issues/issue-38987.rs
 ui/issues/issue-39089.rs
-ui/issues/issue-39175.rs
 ui/issues/issue-39211.rs
 ui/issues/issue-39367.rs
 ui/issues/issue-39548.rs

src/tools/tidy/src/ui_tests.rs

@@ -17,7 +17,7 @@ use ignore::Walk;
 const ENTRY_LIMIT: u32 = 901;
 // FIXME: The following limits should be reduced eventually.
 
-const ISSUES_ENTRY_LIMIT: u32 = 1664;
+const ISSUES_ENTRY_LIMIT: u32 = 1662;
 
 const EXPECTED_TEST_FILE_EXTENSIONS: &[&str] = &[
     "rs",     // test source files

tests/ui/issues/issue-39175.fixed renamed to tests/ui/suggestions/import-visible-path-39175.fixed

@@ -1,5 +1,5 @@
 error[E0599]: no method named `exec` found for mutable reference `&mut Command` in the current scope
-  --> $DIR/issue-39175.rs:13:47
+  --> $DIR/import-visible-path-39175.rs:13:47
    |
 LL |     let _ = Command::new("echo").arg("hello").exec();
    |                                               ^^^^