vim: Refactor and fix multiline operations (#25055)

Changes:
- [x] Cursor at the start during yank operations on objects (`yip`,
`yab` etc).
- [x] Refactors this: Trim all leading and trailing whitespace from
inner multiline bracket selection.
  - This leaves a nicely indented line when doing `ci{` `vi{d` etc
  - [x] Checks for empty selection
  - [x] Removed moving cursor to the start in visual bracket operations

This cleans up the previous implementation by providing a simpler check
in `surrounding_markers`, instead of calling a new function in
`expand_object`. No functionality was changed there except for handling
the empty selection and removing some cursor adjustments that should not
have been there after further testing.

Release Notes:

- N/A

crates/vim/src/visual.rs

@@ -16,7 +16,7 @@ use workspace::searchable::Direction;
 
 use crate::{
     motion::{first_non_whitespace, next_line_end, start_of_line, Motion},
-    object::{self, Object},
+    object::Object,
     state::{Mode, Operator},
     Vim,
 };
@@ -375,9 +375,6 @@ impl Vim {
                                 } else {
                                     selection.end = range.end;
                                 }
-                                if !around && object.is_multiline() {
-                                    object::preserve_indented_newline(map, selection);
-                                }
                             }
 
                             // In the visual selection result of a paragraph object, the cursor is