UI: fix scale vm if first disk offering is dymamic

[weizhouapache]

Description

This PR fixes #8212

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• build/CI

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[weizhouapache]

screenshot

prior to this PR

with this PR

[weizhouapache]

@blueorangutan ui

[blueorangutan]

@weizhouapache a Jenkins job has been kicked to build UI QA env. I'll keep you posted as I make progress.

[codecov]

Codecov Report

Merging #8213 (33c3660) into 4.18 (e790047) will increase coverage by 16.01%.
Report is 1 commits behind head on 4.18.
The diff coverage is 0.00%.

@@              Coverage Diff              @@
##               4.18    #8213       +/-   ##
=============================================
+ Coverage     13.10%   29.11%   +16.01%     
- Complexity     9121    30982    +21861     
=============================================
  Files          2720     5186     +2466     
  Lines        257599   365756   +108157     
  Branches      40158    53490    +13332     
=============================================
+ Hits          33747   106480    +72733     
- Misses       219588   244678    +25090     
- Partials       4264    14598    +10334     

Flag	Coverage Δ
simulator-marvin-tests	25.05% <ø> (?)
uitests	4.50% <0.00%> (?)
unit-tests	14.79% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...ommand/admin/network/CreateNetworkOfferingCmd.java	70.52% <ø> (ø)
...ommand/admin/network/UpdateNetworkOfferingCmd.java	51.66% <ø> (ø)
ui/src/views/compute/ScaleVM.vue	0.00% <0.00%> (ø)

... and 3787 files with indirect coverage changes

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[blueorangutan]

UI build: ✔️
Live QA URL: https://qa.cloudstack.cloud/simulator/pr/8213 (QA-JID-226)

[Pearl1594]

Tested - LGTM

[DaanHoogland]

CLGTM