ia do not detect outer scope when an inner scope is present in the line

[vds2212]

With the following text:

(
  foo
  (bar)
)

If the cursor is |:

(
  |foo
  (bar)
)

via lead, as expected to:

(
[  foo
  (bar)]
)

where the selection is []

If the cursor is |:

(
  |foo
|  (bar)
)

via lead to:

(
  foo
  [(bar)]
)

where the selection is []

We would expect the vanilla Vim behavior

(
[  foo
  (bar)]
)