[CT-2450] Add exp_path back to project config deprecation warning

[jtcohen6]

In #7185 I accidentally cut exp_path!

dbt-core/core/dbt/config/project.py

Lines 315 to 321 in 1722079

	# this field is no longer supported, but many projects may specify it with the default value
	# if so, let's only raise this deprecation warning if they set a custom value
	if not default_value or project_dict[deprecated_path] != default_value:
	deprecations.warn(
	f"project-config-{deprecated_path}",
	deprecated_path=deprecated_path,
	)

dbt-core/core/dbt/events/types.py

Line 283 in 828d723

f"The `{self.deprecated_path}` config has been renamed to `{self.exp_path}`."

dbt-core/core/dbt/events/types.py

Line 295 in 828d723

f"The `{self.deprecated_path}` config has been renamed to `{self.exp_path}`."

The `source-paths` config has been renamed to ``.Please update your
`dbt_project.yml` configuration to reflect this change.