EnvironmentsChangedParams does not support conda envs with the same interpreter path

[DonJayamanne]

Testing #18727

When using two conda envs with the same interpreter path, the following event must support the new type EnvPathType

• EnvironmentsChangedParams

Else its not possible to know what got updated, as the path isn't the key anymore

[karrtikr]

path here can refer to the path to environment folder, as the API doc says:

vscode-python/src/client/apiTypes.ts

Lines 103 to 111 in f1d0509

	export interface EnvironmentsChangedParams {
	/**
	* Path to environment folder or path to interpreter that uniquely identifies an environment.
	* Virtual environments lacking an interpreter are identified by environment folder paths,
	* whereas other envs can be identified using interpreter path.
	*/
	path?: string;
	type: 'add' | 'remove' | 'update' | 'clear-all';
	}

So the envs are still distinguishable.