Wrong indentation on explicit operator calls

[kadircet]

Starting with #136073, we now get the formatting of:

auto foo() {
  return sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss.
  operator int*();
}

emphasis on the missing indentation before operator.

Originally posted by @kadircet in #135972

[llvmbot]

@llvm/issue-subscribers-clang-format

Author: kadir çetinkaya (kadircet)

> Starting with https://github.com//pull/136073, we now get the formatting of: > ```cpp > auto foo() { > return sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss. > operator int*(); > } > ``` > > emphasis on the missing indentation before `operator`.

Originally posted by @kadircet in #135972