fixes to entries

[davetsay]

Closes #6354

Describe your changes:

• fix delete first notebook entry
• fix select unfocused on create

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• Is this change backwards compatible? For example, developers won't need to change how they are calling the API or how they've extended core plugins such as Tables or Plots.

Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Command line build passes?
• Has this been smoke tested?
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@201c669). Click here to learn what that means.
The diff coverage is 0.00%.

❗ Current head ab0583c differs from pull request most recent head 3d82743. Consider uploading reports for the commit 3d82743 to get more accurate results

@@            Coverage Diff            @@
##             master    #6464   +/-   ##
=========================================
  Coverage          ?   54.86%           
=========================================
  Files             ?      626           
  Lines             ?    26638           
  Branches          ?     2407           
=========================================
  Hits              ?    14615           
  Misses            ?    11360           
  Partials          ?      663           

Flag	Coverage Δ		*Carryforward flag
e2e-ci	39.35% <ø> (?)		Carriedforward from 1b7fb9b
e2e-full	51.07% <ø> (?)		Carriedforward from 1b7fb9b
e2e-stable	55.53% <ø> (?)
unit	49.18% <0.00%> (?)

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
src/plugins/notebook/components/Notebook.vue	20.63% <0.00%> (ø)
src/plugins/notebook/components/NotebookEntry.vue	16.79% <0.00%> (ø)

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[jvigliotta]

BAM! Nicely done!