fix(enriching): prevent panic when attaching inputs to sinks with name of a table (#22528)

* fix(enriching): prevent panic when attaching inputs to sinks with name of a table

If an enrichment table has the same name as one of components, even when that table is not used as a
sink, `topology/running` panics when configuring inputs, because it is not checking the updated
`inputs` map, but the `tasks` map when looking up enrichment tables that act as sinks.

Closes: #22514

* Add changelog entry

* Add 0.45.0 known issue note

* Update website/cue/reference/releases/0.45.0.cue

Co-authored-by: Pavlos Rontidis <pavlos.rontidis@gmail.com>

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Co-authored-by: Pavlos Rontidis <pavlos.rontidis@gmail.com>