[json] Explorer Outline view shows wrong int values when viewing JSON document

Issue Type: <b>Bug</b> 1. Open a JSON file (observed issue with the JSON output retrieved from Twitter's API) 2. In Explorer, expand the outline for the file 3. Observe that not all values shown actually match those in the file (specifically, 'id' and 'id_str' in the file are identical for each item in statuses, but Outline shows them as two different values on almost all with 'id' not being accurate) VS Code version: Code 1.61.2 (6cba118ac49a1b88332f312a8f67186f7f3c1643, 2021-10-19T14:57:20.575Z) OS version: Windows_NT x64 10.0.19043 Restricted Mode: Yes <details> <summary>System Info</summary> |Item|Value| |---|---| |CPUs|Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz (4 x 3392)| |GPU Status|2d_canvas: enabled<br>gpu_compositing: enabled<br>multiple_raster_threads: enabled_on<br>oop_rasterization: enabled<br>opengl: enabled_on<br>rasterization: enabled<br>skia_renderer: enabled_on<br>video_decode: enabled<br>vulkan: disabled_off<br>webgl: enabled<br>webgl2: enabled| |Load (avg)|undefined| |Memory (System)|15.91GB (9.69GB free)| |Process Argv|--crash-reporter-id a8b09d6d-25a7-465e-9bcf-4dcca82a0ffc| |Screen Reader|no| |VM|0%| </details><details><summary>Extensions (4)</summary> Extension|Author (truncated)|Version ---|---|--- gitlens|eam|11.6.1 vscode-pull-request-github|Git|0.32.0 jupyter|ms-|2021.9.1101343141 jupyter-keymap|ms-|1.0.0 </details><details> <summary>A/B Experiments</summary> ``` vsliv368:30146709 vsreu685:30147344 python383:30185418 vspor879:30202332 vspor708:30202333 vspor363:30204092 pythontb:30283811 pythonptprofiler:30281270 vsdfh931cf:30280410 vshan820:30294714 vstes263:30335439 vscoreces:30384385 pythondataviewer:30285071 vscod805cf:30301675 pythonvspyt200:30340761 binariesv615:30325510 vsccppwt:30382697 bridge0708:30335490 pygetstartedt3:30385195 dockerwalkthru:30377721 bridge0723:30353136 pythonrunftest32:30373476 pythonf5test824:30373475 javagetstartedt:30391933 pythonvspyt187:30373474 vsqsis300:30386381 vsaa593cf:30376535 vssld246:30386377 ``` </d…