[BUG][TYPESCRIPT] date-timing-parsing is truncating the time

[gonozalviii]

Description

When declaring a field with type: string, format: data-time I expect to get date and time information. Current behavior is that only date information is available. This is a change in behavior to versions prior 4.2.1 and breaks interoperability with other languages like java-spring (Date cannot be parsed into OffsetDateTime).

openapi-generator version

Bug was introduced with 4.2.1, commit cd11cc2

Related issues/PRs

Bug was introduced by:
#4337

Suggest a fix

api.service.mustache:185
({{paramName}} as any).toISOString().substr(0, 10)

substr function is truncation the time and should be removed