Log: move process id to front of pathname in log format

The previous filename:pid has been removed, the filename is part of the pathname.
No need for double filename info and wasting space in the log line.

src/corelibs/logging_handling/log.py

@@ -702,9 +702,9 @@ class Log(LogParent):
                 # log name
                 '[%(name)s] '
                 # filename + pid
-                '[%(filename)s:%(process)d] '
-                # path + func + line number
-                '[%(pathname)s:%(funcName)s:%(lineno)d] '
+                # '[%(filename)s:%(process)d] '
+                # pid + path/filename + func + line number
+                '[%(process)d:%(pathname)s:%(funcName)s:%(lineno)d] '
                 # error level
                 '<%(levelname)s> '
                 # message