Of course, these missiles do have their own homing sensor. But intitial geolocation of SAM sites has to be done by specialised ESM pod, no? See for exmaple F-16CJ or Growler. Rafale, Gripen can also do that using their built in EW suite and networking as far as I read.
If they can integrate this one with Rafale, (upcoming ones) that is going to be an important step for IAF in SEAD/DEAD capability.
Yes its preferable to be done by pod or the EW suite onboard (its major area RuAF has been found lacking with their a/c incl Su-30 marks in ukraine theatre SEAD and DEAD).
DARE has evolved a number of EW pods (information is scant on these).
With evolution of RWR architecture by DARE: Tempest > Tarang > DR-118 , the EW suite should be getting better....and I guess found adequate for now to handle Kh-31P, Rudram 1 and now Rudram 2.
Just there is no specific HTS pod (specific to the HARM) like the one that turns F-16 into dedicated Wild Weasel.
Maybe with time as squadrons bulk up in number again, there can be dedicated SEAD/DEAD with Rudram 2 et al.