checker, builder, indexer: a state of their own not on the bus at start is bound when it appears; mesh-grants composes each principal's hearing of its buckets' creation (issue 1790)

A delivery restarted the checker and the builder before the grants part created their new state hearing;
OptionalBucket answered nil and the hearing was never kept. They, and the builder's reasks and queues and the
indexer's takeins, now open their own states through mesh-sdk process.AwaitBucket (mesh-sdk
fix/1790-state-appears d515c71), which binds on the bus's STREAM.CREATED advisory and writes the latest kept
value. mesh-grants takes the same SDK, whose composer grants that advisory.

modules/mesh-grants/go.mod

@@ -3,7 +3,7 @@ module mesh-grants
 go 1.26.0
 
 require (
-	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026134035-21252194d530
+	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026141100-d515c71e1c99
 	github.com/nats-io/nats.go v1.54.0
 )
 

modules/mesh-grants/go.sum

@@ -1,5 +1,5 @@
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026134035-21252194d530 h1:NwCb+gOh0UYqlyG6hG2/jffE/Gd0c7YWd4iJlaCB0lU=
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026134035-21252194d530/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026141100-d515c71e1c99 h1:AZvT60oM4RFa6fcW2qGladqrXrEQD4bwMIO5jQj1zp8=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026141100-d515c71e1c99/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op h1:Z/MZK75wC/NSrkgqeNIa7jexam9uWzhLmFTSCPI/kn0=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op/go.mod h1:FQyySiasQQM8735Ddel3MRojmy4dA1IqCeyJ5jmPMbI=
 github.com/google/go-tpm v0.9.8 h1:slArAR9Ft+1ybZu0lBwpSmpwhRXaa85hWtMinMyRAWo=