Change type of field SearchBlob.id to String

[vadipp]

Fixes #936

[jmini]

Since Long was not working, I consider that this breaking change of the type to String is OK for the id attribute.

[jmini]

@jabby do you have an opinion on this?

[jabby]

Not really. I'm not sure if we should or not merge it in 5.x.

[vadipp]

@jabby what doubts do you have exactly? I should emphasize that this is not a breaking change, but a fixing change :)

[gedeffe]

Hello
@vadipp , Thanks for this fix, just when I need it ;-)
@jmini could it be possible to merge this fix into branch 6.x too ?

[jmini]

In the branch 6.x this is not a problem. Right now during the -rc time we can do breaking changes.

IMO in the main branch, even if this is breaking from a java API perspective this should be allowed, since it is just not working the way it is now.
And if we merge it to main then we cascade it to 6.x as described in #926 (comment)

@jabby you seems to have some doubts that I respect, but can we have a decision here?