Helm import generates invalid TypeScript for property names with forward slashes

Description

When importing a Helm chart that contains JSON Schema property names with forward slashes, cdk8s generates invalid TypeScript code.

Steps to Reproduce

1. Import the Grafana k8s-monitoring Helm chart:

cdk8s import helm:https://grafana.github.io/helm-charts/k8s-monitoring@3.5.6

2. Generated TypeScript file imports/k8s-monitoring.ts has syntax errors on lines 1335, 1345, 1359, and 1369

Expected Behavior

Property names containing forward slashes should be sanitized to valid TypeScript identifiers (e.g., kubernetesIoOs) or accessed via bracket notation.

Actual Behavior

The code generator converts JSON schema property names like "kubernetes.io/os" to camelCase identifiers that still contain forward slashes, resulting in invalid TypeScript:

Line 1335:

readonly kubernetesIo/os?: string;  // Invalid syntax - `/` in property name

Line 1345:

'kubernetes.io/os': obj.kubernetesIo/os,  // Invalid - `/` treated as division operator

Line 1359:

readonly k8SGrafanaCom/logsJob?: string;  // Invalid syntax - `/` in property name

Line 1369:

'k8s.grafana.com/logs.job': obj.k8SGrafanaCom/logsJob,  // Invalid - `/` treated as division operator

Environment

• cdk8s version: 2.203.1
• Helm chart: https://grafana.github.io/helm-charts/k8s-monitoring@3.5.6
• Node version: v22.17.0
• Operating System: macOS

Currently working around by manually editing the resulting typescript