fix(vred): expose HIDDEN parameters to GUI and remove unused parameters

[gahyusuh]

What was the problem/requirement? (What/Why)

The VRED sample job bundle could not be submitted using deadline bundle gui-submit due to a validation error:

Job bundle validation failed: Hidden parameters "SequenceName", "name", "description", "input_filenames", "input_directories", "output_directories" are missing values. Hidden parameters must have either a default value in the template or a value in parameter_values.yaml.

This issue arose after enhanced validation for HIDDEN parameters (aws-deadline/deadline-cloud#843) was released with deadline-cloud 0.53.1. The validation now requires that all HIDDEN parameters must have non-empty string default values, but several parameters in the VRED template had empty string defaults.

What was the solution? (How)

1. Exposed previously hidden parameters to the GUI:

   • Rendering options: IncludeAlphaChannel, OverrideRenderPass, PremultiplyAlpha, TonemapHDR)
   • Job type selection: JobType and SequenceName

2. Removed unused metadata parameters:

   • Deleted submitter_name, name, description, input_filenames, input_directories, output_directories
   • These parameters were not actually used by the job template logic and served no functional purpose

3. Kept HIDDEN parameters:

• JobScriptDir and CondaPackages remain hidden as these parameters already had non-empty default values, so they did not cause validation errors

What is the impact of this change?

Users can now submit a VRED job using this sample template via the GUI submitter (deadline bundle gui-submit) without hitting the validation error.

How was this change tested?

• Verified that deadline bundle gui-submit vred_render/ opens the GUI without validation errors
• Tested that all exposed parameters appear correctly in the submission GUI
• The job rendering was successful.

Was this change documented?

No.

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