[BUG] Generator typescript-axios produces invalid output when enum value is '*/*'

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

Invalid typescript file generated when using generator typescript-axios and enum contains string value of */*. See generation detail sections for specifics.

openapi-generator version

$ openapi-generator-cli version
6.5.0

OpenAPI declaration file content or url

openapi: 3.0.3
info:
  title: Test
  version: 0.0.1
paths:
  /test:
    delete:
      parameters:
        - in: header
          name: Accept
          schema:
            $ref: '#/components/schemas/MyEnum'
      operationId: delete
      responses:
        '204':
          description: Deleted
components:
  schemas:
    MyEnum:
      type: string
      default: application/json
      enum:
        - '*/*'
        - application/json
        - application/my.document-tree+json

Generation Details

Output file api.ts has the following enum specification

export const MyEnum = {
    : '*_/_*',
    ApplicationJson: 'application/json',
    ApplicationMyDocumentTreejson: 'application/my.document-tree+json'
} as const;

Expected:

export const MyEnum = {
    Asterisk: '*/*',
    ApplicationJson: 'application/json',
    ApplicationMyDocumentTreejson: 'application/my.document-tree+json'
} as const;

Steps to reproduce

# Where test.yml has the contents described above
openapi-generator-cli generate \
  -i ./test.yml \
  -g typescript-axios \
  -o ./output \
  -p modelPropertyNaming=original \
  --remove-operation-id-prefix \
  -p useSingleRequestParameter=true

Related issues/PRs

Suggest a fix

Not sure what the fix should be but here is what seems to be happening for the Key

1. */* -> *_* when replacing all / characters with _. Reference
2. *_* -> _ when removing non-word characters with regex \W. Reference
3. _ Gets converted to empty string. Reference

For the value

1. Attempt to get enum value. Reference
2. Attempt to escape enum value text Reference
3. Replace */ -> *_/ and /* -> /_* Reference

Start with the enum-name and value handling referenced in DefaultCodegen.java and AbstractTypeScriptClientCodegen.java, especially the cited lines around key sanitization and value escaping. Reproduce with the provided test.yml and typescript-axios command, then verify generated api.ts uses Asterisk: '/' and keeps the other enum entries unchanged.