feat: String improvements #601

1

For consistency with above, add the word bundle to the string below:

Example:
1 out of 1 bundle processed - Finalizing: ...

2

Like above, if the total number of bundles is equal to 1, it should be "... bundle processed ...".
And only if the total number is more than 1, it should be "... bundles processed ...":

Examples:
1 out of 1 bundle processed - Finalizing: ...

3 out of 3 bundles processed - Finalizing: ...