initdb-configmap does not repsect fullnameOverride

[snowpoke]

The template for initdb-configmap is currently defined as follows:

{{- if .Values.postgresql.enabled }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .Release.Name }}-postgresql-initdb
  labels:
  {{ include "matrix-authentication-service.labels" . | nindent 4}}
data:
[...]

This causes difficulties when mas is deployed as a subchart as in the https://github.com/small-hack/matrix-chart project: Both synapse's postgresql and mas's postgresql deployment's initdb ConfigMap base their name on .Release.Name, leading to a naming conflict.

All other resources base their name on the expected matrix-authentication-service.fullname field, but for initdb-configmap, it was changed to .Release.Name in this commit "fix init-db configmap name" (ca81eef), so I imagine this behavior is intentional? I don't understand why this choice was made however.