fix: update helm values for deployment (#836)

## Summary by Sourcery

Update self-hosted on-prem installation docs and example values to
introduce licensing, registry credentials, SMTP login, secret manager
integrations, observability settings, and bump the Helm chart version.

New Features:
- Add `license` section in values.yaml to configure SettleMint license
and entitlements
- Introduce `imagePullCredentials` block for container registry
authentication
- Support SMTP‐based passwordless email login under
`auth.providers.passwordless`
- Add integrations for Vault, Google Secret Manager, AWS Secret Manager,
and Azure Key Vault

Enhancements:
- Restructure example values: ingress annotations/TLS placeholders,
resource requests, replica counts, observability components
(metrics-server, Grafana, Loki, Tempo, VictoriaMetrics), and advanced
deployment config (mixedLoadBalancers, nodePorts)
- Update prerequisites overview and checklist to include SMTP server and
license registry credentials

Build:
- Bump Helm chart version from v7.31.11 to v7.33.0 in install
instructions

Documentation:
- Add new license prerequisite document (`license.mdx`) with
instructions to obtain and validate SettleMint license
- Revise platform installation guide with extended Helm values examples
and prerequisites overviews

Author: insider89