[folding] selecting first line of folded range does not select full folded range

Issue Type: <b>Bug</b> 1. Create a variable with an array 2. Collapse the array 3. Mark the line with the array and copy it 5. Paste below **Actual result:** the only array name with open bracket is copied **Expected result:** whole array is copied **PFA** VS Code version: Code 1.33.1 (51b0b28134d51361cf996d2f0a1c698247aeabd8, 2019-04-11T08:20:22.771Z) OS version: Linux x64 4.15.0-47-generic <details> <summary>System Info</summary> |Item|Value| |---|---| |CPUs|Intel(R) Core(TM) i5-4670 CPU @ 3.40GHz (4 x 3708)| |GPU Status|2d_canvas: disabled_software<br>checker_imaging: disabled_off<br>flash_3d: disabled_software<br>flash_stage3d: disabled_software<br>flash_stage3d_baseline: disabled_software<br>gpu_compositing: disabled_software<br>multiple_raster_threads: disabled_off<br>native_gpu_memory_buffers: disabled_software<br>rasterization: disabled_software<br>surface_synchronization: disabled_off<br>video_decode: disabled_software<br>webgl: disabled_off<br>webgl2: disabled_off| |Load (avg)|0, 1, 1| |Memory (System)|31.35GB (12.71GB free)| |Process Argv|--unity-launch| |Screen Reader|no| |VM|0%| </details><details><summary>Extensions (40)</summary> Extension|Author (truncated)|Version ---|---|--- output-colorizer|IBM|0.1.2 pgformatter|bra|1.6.5 better-toml|bun|0.3.2 npm-intellisense|chr|1.3.0 path-intellisense|chr|1.4.2 bracket-pair-colorizer|Coe|1.0.61 systemd-unit-file|coo|1.0.3 vscode-markdownlint|Dav|0.26.0 vscode-eslint|dba|1.8.2 pgsql|dou|0.1.3 gitlens|eam|9.6.0 tslint|eg2|1.0.43 vscode-npm-script|eg2|0.3.5 LogFileHighlighter|emi|2.4.3 vsc-material-theme|Equ|2.8.2 vscode-postman|eri|0.5.2 gauge|get|0.0.3 gc-excelviewer|Gra|2.1.32 vscode-nginx-conf-hint|han|0.1.0 beautify|Hoo|1.4.11 js-test-gen-vscode|jsT|0.5.0 ldif|jta|0.1.1 vscode-regexp-preivew|le0|0.0.3 terraform|mau|1.3.9 git-graph|mhu|1.4.5 Go|ms-|0.9.2 sqltools|mtx|0.17.15 makefiles-support-for-vscode|nae|0.0.3 vscode-json-transform|oct|0.1.2 vscode-docker|Pet|0.6.1 vscode-versionlens|pfl|0.22.0 vscode-yaml|…