browser side error "animint is not defined" in global-variables test

[siddhesh195]

@tdhock @Faye-yufan

I noticed an error on browser console during the execution of test renderer1-global-variables.

The error on browser console is as follows:

animint-htmltest/:20 Uncaught ReferenceError: animint is not defined at animint-htmltest/:20:18

But the test still passes in R.

This is the only failing test case for the following commit I made for the html table task(#139 ):

https://github.com/animint/animint2/pull/139/commits/0a78f92abc7abdcd18f26f70eedfe4eff4f06c14

I do not know whether this preexisting issue was the cause of the failure of my commit or not. But the test was passing for the previous commits I had made. The failure happened only in this commit where I add new functionality to add plots in the outer table even if the user wants fixed location for some plots and not for the others.

The same error is occurring even for chromote testing branch ( #126 ) as well. So I think it is preexisting issue in the main branch.