Missing support for "Enable dynamic parameters for workspace creation" setting

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Description

The Coder main product includes a template setting called "Enable dynamic parameters for workspace creation" (introduced in v2.24.0), but this setting is not available in the coderd_template resource in the Terraform provider.

Current State

In Coder UI/API:

• Template settings include a checkbox for "Enable dynamic parameters for workspace creation"
• This is controlled by the use_classic_parameter_flow field (inverted boolean)
• Feature is documented at: https://coder.com/docs/admin/templates/extending-templates/dynamic-parameters

In Terraform Provider:

• The coderd_template resource does not include any field for controlling dynamic parameters
• No use_classic_parameter_flow or equivalent field exists

Expected Behavior

The coderd_template resource should include a field to control the dynamic parameters setting, such as:

resource "coderd_template" "example" {
  # ... other fields
  enable_dynamic_parameters = true  # or use_classic_parameter_flow = false
}

Impact

Users managing Coder templates via Terraform cannot:

• Enable dynamic parameters for new templates
• Manage this setting consistently across environments
• Maintain infrastructure-as-code parity with the UI

References

• Dynamic Parameters documentation: https://coder.com/docs/admin/templates/extending-templates/dynamic-parameters
• Template settings form: /site/src/pages/TemplateSettingsPage/TemplateGeneralSettingsPage/TemplateSettingsForm.tsx
• Field name in Coder: use_classic_parameter_flow (boolean, inverted)