[Reg 9.0.2 -> 10.0.0rc1] Problems with "Rename Symbol" tool

Steps to reproduce

1. Create a new Qt project
2. In main.cpp, hover your mouse cursor over "main()" and press Ctrl+Shift+R to activate "Rename Symbol Under Cursor"
3. Type "myFunc" as the new function name

Outcomes
After Step #2,

• Qt Creator 8 shows "C++ Usages: main" (correct)
• Qt Creator 9 shows "Find References with clangd for <PROJECT> for: main_new" (wrong – we searched for "main", not "main_new")

After Step #3,

• Qt Creator 8 allows us to click "Replace" immediately (correct)
• Qt Creator 9 prevents us from clicking "Replace" immediately, saying "Search Again to update results and re-enable Replace" (wrong – we shouldn't need to click "Search Again" here)