Revert "Show invisibles in editor (#19298)" (#19752)

Closes: #19714

This reverts commit 6dcec47235.

Release Notes:

- (preview only) Fixes a crash when rendering invisibles

crates/language/src/buffer.rs

@@ -501,8 +501,6 @@ pub struct Chunk<'a> {
     pub is_unnecessary: bool,
     /// Whether this chunk of text was originally a tab character.
     pub is_tab: bool,
-    /// Whether this chunk of text is an invisible character.
-    pub is_invisible: bool,
     /// An optional recipe for how the chunk should be presented.
     pub renderer: Option<ChunkRenderer>,
 }
@@ -4213,6 +4211,7 @@ impl<'a> Iterator for BufferChunks<'a> {
             if self.range.start == self.chunks.offset() + chunk.len() {
                 self.chunks.next().unwrap();
             }
+
             Some(Chunk {
                 text: slice,
                 syntax_highlight_id: highlight_id,