XADD - skip rewrite the id arg if it was given and is valid. (#9599)
XADD - skip rewrite the id arg if it was given and is valid. (#9599)

When calling `XADD` with a predefined id (instead of `*`) there's no need to run
the code which replaces the supplied id with itself. Only when we pass a wildcard
id we need to do this.
For apps which always supply their own id this is a slight optimization.
soloestoy/redis,soloestoy/redis,yossigo/redis,antirez/redis,oranagra/redis,PKRoma/redis,neomantra/redis,ofirluzon/redis,charsyam/redis,PKRoma/redis,soloestoy/redis,oranagra/redis,charsyam/redis,ofirluzon/redis,ofirluzon/redis,PKRoma/redis,oranagra/redis,charsyam/redis,neomantra/redis,yossigo/redis,ofirluzon/redis,oranagra/redis,soloestoy/redis,neomantra/redis,antirez/redis,neomantra/redis,yossigo/redis,yossigo/redis,soloestoy/redis,charsyam/redis,antirez/redis,oranagra/redis,antirez/redis,yossigo/redis,charsyam/redis,neomantra/redis,PKRoma/redis,ofirluzon/redis,PKRoma/redis