Formatting issue in eventarc golden files

[parthea]

There is a formatting issue in the event arc golden files which was called out in #1740 (comment)

gapic-generator-python/tests/integration/goldens/eventarc/google/cloud/eventarc_v1/types/channel.py

Lines 104 to 107 in 4eee261

	1. The SaaS provider disconnected from this
	Channel. 2. The Channel activation token has
	expired but the SaaS provider wasn't
	connected.

There number of spaces between the words provider and wasn't is excessive.

The current parsing logic does not remove the extra spaces which appear in the source proto as a result of indenting subsequent lines in lists.

See source proto here: https://github.com/googleapis/googleapis/blob/eda81ef50cbc08ddf39e9e0689e116421581a234/google/cloud/eventarc/v1/channel.proto#L59C1-L64C28

The extra spaces added in the example below specifically for indentation of subsequent lines in lists is the cause of the formatting issue.

    // The INACTIVE state indicates that the Channel cannot receive events
    // permanently. There are two possible cases this state can happen:
    //
    // 1. The SaaS provider disconnected from this Channel.
    // 2. The Channel activation token has expired but the SaaS provider
    //    wasn't connected.

The following correction in the source protos would not result in a gap in the generated output.

    // The INACTIVE state indicates that the Channel cannot receive events
    // permanently. There are two possible cases this state can happen:
    //
    // 1. The SaaS provider disconnected from this Channel.
    // 2. The Channel activation token has expired but the SaaS provider
    // wasn't connected.

We can fix this problem by completing one or more of the following

• Update the source proto for event arc to remove indentation for subsequent lines in lists
• Updating AIPs and linter rule to prevent indentation for subsequent lines in lists
• Update the proto documentation parsing logic to remove the extra spaces which can be introduced due to the indentation of subsequent lines in lists.