BUG #17640: fork off the requested timeline before the switchpoint.

The following bug has been logged on the website:

Bug reference:      17640
Logged by:          Mukesh Singh
Email address:      mukeshsingh.singh19@gmail.com
PostgreSQL version: 11.5
Operating system:   linux
Description:

2022-10-14 06:21:03 WAT 2022-10-14 06:21:03.969 WAT [63170] LOG:  restored
log file "0000003400004E7500000029" from archive
2022-10-14 06:21:03 WAT 2022-10-14 06:21:03.976 WAT [63170] FATAL:
requested timeline 53 is not a child of this server's history
2022-10-14 06:21:03 WAT 2022-10-14 06:21:03.976 WAT [63170] DETAIL:  Latest
checkpoint is at 4E75/2930CB38 on timeline 52, but in the history of the
requested timeline, the server forked off from that timeline at
4B77/F5FFF080.
2022-10-14 06:21:03 WAT 2022-10-14 06:21:03.977 WAT [63168] LOG:  startup
process (PID 63170) exited with exit code 1
2022-10-14 06:21:03 WAT 2022-10-14 06:21:03.977 WAT [63168] LOG:  aborting
startup due to startup process failure
2022-10-14 06:21:03 WAT 2022-10-14 06:21:03.978 WAT [63168] LOG:  database
system is shut down