Rewrote `&lt;` to `<`, causing a build error

[kategengler]

I have some code that looks like
<td>&lt;100 %</td>

Running dyfactor run template disambiguate-locals ./app --level modify rewrote this to <td><100 %</td> and caused a build error. Running the plugin then failed with:

TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at telemetry.data.forEach (/Users/katie/dev/steadfast/compass/node_modules/dyfactor-plugin-disambiguate-locals/dist/index.js:210:20)
    at Array.forEach (<anonymous>)
    at default_1.modify (/Users/katie/dev/steadfast/compass/node_modules/dyfactor-plugin-disambiguate-locals/dist/index.js:209:24)
    at ModifyModeImpl.modify (/Users/katie/.config/yarn/global/node_modules/dyfactor/dist/commonjs/src/runtime/mode.js:118:21)
    at Runner.<anonymous> (/Users/katie/.config/yarn/global/node_modules/dyfactor/dist/commonjs/src/runtime/runner.js:35:26)
    at Generator.next (<anonymous>)
    at fulfilled (/Users/katie/.config/yarn/global/node_modules/dyfactor/dist/commonjs/src/runtime/runner.js:4:58)
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:160:7)

[kategengler]

In another place, passing an option to component like so:
placeholder='Choose a "creative term here"' causes a build error as it is rewritten with double quotes in place of the single quotes "Choose a "creative term here""

[krisselden]

This PR fixes the glimmer printer glimmerjs/glimmer-vm#834

[kategengler]

Updating to @glimmer/syntax 0.35.7 here, in ember-template-recast, and in dyfactor fixes the problem with<.

The quotation problem in my comment above still happens though, would you prefer I make that another issue?