Sauce for similar XR-SAM and SLCM posters please.
Also, before VL-SRSAM, it was Project Maitri and before that it was Project Trishul. And after Maitri was also stopped, this 2015 news report about Maitri's revival came out and it does mention SRSAM:-
Even as the indigenous surface-to-air missile Akash has failed to inspire enough confidence for deployment on Indian Navy ships, the government has asked the Defence Research and Development Organisation (DRDO) to engage with the French firm MBDA missile systems for development of short-range...
www.dnaindia.com
So it seems you are right about it being called SRSAM long before Astra was picked for the job. But then why are we seeing DRDO put up 7 year old posters in DefExpo22? Saw the same thing with Prahaar poster. They posted the range of 150km when we know they are working on the 200 km Pranash now. So confusing this DefExpo is.