Expanding emmet abbreviations inside JSX inline functions not working

Issue Type: <b>Bug</b> Expanding emmet abbreviations inside inline functions is not working. Given the example React component below I am unable to expand any abbreviations inside the render function. Expanding works in rest of the file. ```jsx import React from 'react'; import { Form } from 'react-final-form'; const SomeComponent = () => ( <Form render={() => ( <pre>Expanding Emmet abbreviations inside this function is not working</pre> )} /> ); export default SomeComponent; ``` What bothers me the most is that it is not even working when explicitly selecting from the menu "Emmet: Expand Abbreviation". If it was up to me I would make the explicit choice from the menu expand whatever and in whatever syntax. Additionally would like to note that "Emmet: Wrap with Abbreviation" seems to already work like that. Shouldn't the "Emmet: Expand Abbreviation" work the same way? --- VS Code version: Code 1.28.2 (7f3ce96ff4729c91352ae6def877e59c561f4850, 2018-10-17T00:18:43.347Z) OS version: Darwin x64 18.0.0 <details> <summary>System Info</summary> |Item|Value| |---|---| |CPUs|Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz (8 x 2200)| |GPU Status|2d_canvas: enabled<br>checker_imaging: disabled_off<br>flash_3d: enabled<br>flash_stage3d: enabled<br>flash_stage3d_baseline: enabled<br>gpu_compositing: enabled<br>multiple_raster_threads: enabled_on<br>native_gpu_memory_buffers: enabled<br>rasterization: enabled<br>video_decode: enabled<br>video_encode: enabled<br>webgl: enabled<br>webgl2: enabled| |Load (avg)|2, 2, 2| |Memory (System)|16.00GB (2.19GB free)| |Process Argv|| |Screen Reader|no| |VM|0%| </details><details><summary>Extensions (4)</summary> Extension|Author (truncated)|Version ---|---|--- vscode-eslint|dba|1.6.1 EditorConfig|Edi|0.12.5 vscode-styled-components|jpo|0.0.22 material-icon-theme|PKi|3.6.0 </details> <!-- generated by issue reporter -->