helm: fix dbStatementTimeout/dbPoolRecycle/dbPoolMaxOverflow silently dropped when set to 0

The webserver command template used `{{- with value }}` to include
--db-statement-timeout and related flags. Go's text/template treats the
integer 0 as falsy, so `with 0` is skipped entirely — preventing users
from disabling PostgreSQL's statement_timeout (which requires value 0).

Also, large integers such as 2147483647 were rendered in scientific
notation (2.147483647e+09) because Helm parses YAML integers as float64
and the default formatter switches to scientific notation past a
threshold.

Replace `with` with `if not (kindIs "invalid" ...)` to distinguish
between an unset (null) value and an explicitly provided zero. Pipe
the value through `int64` to guarantee decimal formatting for all
integer sizes.

Same fix applied to dbPoolRecycle and dbPoolMaxOverflow which have the
same pattern.

Fixes #33821

Author: vincere-mori

helm/dagster/templates/helpers/_helpers.tpl

@@ -54,9 +54,9 @@ If release name contains chart name it will be used as a full name.
 {{- $userDeployments := index .Values "dagster-user-deployments" }}
 {{- printf "dagster-webserver -h 0.0.0.0 -p"}} {{ $_.Values.dagsterWebserver.service.port }}
 {{- if $userDeployments.enabled }} -w /dagster-workspace/workspace.yaml {{- end -}}
-{{- with $_.Values.dagsterWebserver.dbStatementTimeout }} --db-statement-timeout {{ . }} {{- end -}}
-{{- with $_.Values.dagsterWebserver.dbPoolRecycle }} --db-pool-recycle {{ . }} {{- end -}}
-{{- with $_.Values.dagsterWebserver.dbPoolMaxOverflow }} --db-pool-max-overflow {{ . }} {{- end -}}
+{{- if not (kindIs "invalid" $_.Values.dagsterWebserver.dbStatementTimeout) }} --db-statement-timeout {{ $_.Values.dagsterWebserver.dbStatementTimeout | int64 }} {{- end -}}
+{{- if not (kindIs "invalid" $_.Values.dagsterWebserver.dbPoolRecycle) }} --db-pool-recycle {{ $_.Values.dagsterWebserver.dbPoolRecycle | int64 }} {{- end -}}
+{{- if not (kindIs "invalid" $_.Values.dagsterWebserver.dbPoolMaxOverflow) }} --db-pool-max-overflow {{ $_.Values.dagsterWebserver.dbPoolMaxOverflow | int64 }} {{- end -}}
 {{- if $_.Values.dagsterWebserver.pathPrefix }} --path-prefix {{ $_.Values.dagsterWebserver.pathPrefix }} {{- end -}}
 {{- with $_.Values.dagsterWebserver.logLevel }} --log-level {{ . }} {{- end -}}
 {{- if .webserverReadOnly }} --read-only {{- end -}}