`editor.autoIndentOnPaste` doesn't work if the initial line is already correctly indented

[RedCMD]

editor.autoIndentOnPaste doesn't work if the initial line is already correctly indented
if the initial line is incorrectly indented, editor.autoIndentOnPaste works as expected

Type: Bug

1. enable setting editor.autoIndentOnPaste
   disable setting editor.formatOnPaste

"editor.autoIndentOnPaste": true,
"editor.formatOnPaste": false,

2. create TypeScript file with snippet

{
	
}

3. paste example code on the 2nd line (after the tab)

const a = 4;
const b = 4;
const c = 4;
const d = 4;

4. notice incorrect indentation on lines 3-5 🐛
5. repeat step 2
6. add OR remove a tab from line 2
7. repeat step 3
8. notice correct indentation on all lines ✅

Expected:

{
	const a = 4;
	const b = 4;
	const c = 4;
	const d = 4;
}

Actual

{
	const a = 4;
const b = 4;
const c = 4;
const d = 4;
}

cc @aiday-mar

VS Code version: Code 1.107.1 (618725e, 2025-12-10T07:43:47.883Z)
OS version: Windows_NT x64 10.0.26200
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 5 5600 6-Core Processor (12 x 3500)
GPU Status	2d_canvas: enabled direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	31.93GB (16.48GB free)
Process Argv	--crash-reporter-id 6787231e-58b0-4969-923e-74f4af57ddb2
Screen Reader	no
VM	0%

Extensions (11)

Extension	Author (truncated)	Version
vscode-ignore	Bre	3.0.1
tsup-problem-matchers	lux	1.0.7
highlight-on-copy	mgu	1.1.6
json-embedded-languages	Red	0.3.3
regexp-syntax-highlighter	Red	1.1.1
snippets-snippets	Red	0.2.1
tmlanguage-syntax-highlighter	Red	2.8.0
code-spell-checker	str	4.4.0
native-preview	Typ	0.20251227.1
paste-diff	ufy	1.0.2
pretty-ts-errors	Yoa	0.7.0

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