feat: allow HTTP port customization in Helm chart (#36763)

## Description
See https://github.com/appsmithorg/appsmith/issues/36761

I've been tested this with ee Helm chart. Imho tcp/8080 should be the
default port but to avoid breaking change, tcp/80 remains the default
port if the new variable is not specified.

Fixes #36761

## Automation

/ok-to-test tags=""

### 🔍 Cypress test results
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## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [X] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Enhanced configurability of the HTTP container port through the
introduction of a new variable (commented out).
	- Updated the Helm chart version from 2.1.0 to 2.2.0.

- **Bug Fixes**
	- Improved indentation and formatting for better readability.

- **Documentation**
- Commented-out configuration for `HTTPContainerPort` included for
future reference.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Damien LEGER <damien.leger@cure51.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Goutham Pratapa <pratapagoutham@gmail.com>
Co-authored-by: Goutham Pratapa <goutham@appsmith.com>

deploy/helm/Chart.yaml

@@ -11,7 +11,7 @@ sources:
   - https://github.com/appsmithorg/appsmith
 home: https://www.appsmith.com/
 icon: https://assets.appsmith.com/appsmith-icon.png
-version: 2.2.0
+version: 2.2.1
 dependencies:
 - condition: redis.enabled
   name: redis

deploy/helm/templates/statefulset.yaml

@@ -70,7 +70,7 @@ spec:
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           ports:
             - name: http
-              containerPort: 80
+              containerPort: {{ .Values.HTTPContainerPort | default 80 }}
               protocol: TCP
             - name: https
               containerPort: 443
@@ -101,6 +101,10 @@ spec:
             - name: data
               mountPath: /appsmith-stacks
           env:
+          {{- if .Values.HTTPContainerPort }}
+            - name: PORT
+              value: "{{ .Values.HTTPContainerPort }}"
+          {{- end }}
             - name: APPSMITH_ENABLE_EMBEDDED_DB
               value: "0"
           envFrom:

deploy/helm/values.yaml

@@ -316,3 +316,5 @@ applicationConfig:
   APPSMITH_ENCRYPTION_SALT: ""
   APPSMITH_CUSTOM_DOMAIN: ""
   APPSMITH_DISABLE_IFRAME_WIDGET_SANDBOX: "false"
+
+#HTTPContainerPort: 8080