[BUG] [Go] No struct name when allOf has default

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?
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Description

openapi-generator version

7.4.0

OpenAPI declaration file content or url

https://gist.github.com/adler5/bfc8445dd2d71f79772eae72b689a024)

Generation Details

Steps to reproduce

java -jar openapi-generator-cli.jar generate -g go -i api.json -o go
go test
./model_requests.go:32:38: syntax error: unexpected {, expecting expression
./model_requests.go:33:2: syntax error: non-declaration statement outside function body
./model_requests.go:42:38: syntax error: unexpected {, expecting expression
./model_requests.go:43:2: syntax error: non-declaration statement outside function body

Related issues/PRs

Didn't find any after searching.

Suggest a fix

lines 32 and 42

Now
var components RequestsComponents = {}

Should be
var components RequestsComponents = RequestsComponents {}

Start by reproducing the issue with openapi-generator-cli.jar using api.json and the Go generator, then run go test in the generated output. Inspect model_requests.go at lines 32 and 42; done means the generated Go code includes the RequestsComponents struct name in those initializers and compiles without the reported syntax errors.