fix: Combobox text attribute ignored when empty string is passed

[Sebbiv]

Current Behavior

ComboBox Component: When using text property empty string is ignored, meaning you can't clear the ComboBox freeform value

New Behavior

Empty string is not ignored and you are able to use text property to clear ComboBox freeform value

[codesandbox-ci[bot]]

This pull request is automatically built and testable in CodeSandbox.

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Latest deployment of this branch, based on commit 314e6bb3aeed7f108a3edefdafa1c41b8888d68d:

Sandbox	Source
@fluentui/react 8 starter	Configuration
@fluentui/react-components 9 starter	Configuration

[size-auditor[bot]]

Asset size changes

Project	Bundle	Baseline Size	New Size	Difference
office-ui-fabric-react	fluentui-react-ComboBox	236.76 kB	236.77 kB	10 bytes
office-ui-fabric-react	fluentui-react-TimePicker	225.769 kB	225.779 kB	10 bytes

 Over Tolerance (1024 B)  Over Baseline  Below Baseline  New   Removed 1 kB = 1000 B

Baseline commit: fe895d6bb4f9df0304f63f7e77acafef4b912925 (build)

[fabricteam]

📊 Bundle size report

_{🤖 This report was generated against fe895d6bb4f9df0304f63f7e77acafef4b912925}

[fabricteam]

Perf Analysis (@fluentui/react)

No significant results to display.

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
BaseButton	mount	1197	1190	5000
Breadcrumb	mount	2784	2811	1000
Checkbox	mount	2624	2625	5000
CheckboxBase	mount	2363	2368	5000
ChoiceGroup	mount	4239	4281	5000
ComboBox	mount	1170	1185	1000
CommandBar	mount	9200	9304	1000
ContextualMenu	mount	10122	10083	1000
DefaultButton	mount	1372	1349	5000
DetailsRow	mount	3358	3363	5000
DetailsRowFast	mount	3371	3368	5000
DetailsRowNoStyles	mount	3247	3201	5000
Dialog	mount	2952	2978	1000
DocumentCardTitle	mount	590	570	1000
Dropdown	mount	3146	3138	5000
FocusTrapZone	mount	1952	1947	5000
FocusZone	mount	1926	1926	5000
GroupedList	mount	48321	54133	2
GroupedList	virtual-rerender	22928	23156	2
GroupedList	virtual-rerender-with-unmount	82196	82994	2
GroupedListV2	mount	559	548	2
GroupedListV2	virtual-rerender	533	528	2
GroupedListV2	virtual-rerender-with-unmount	556	566	2
IconButton	mount	1796	1786	5000
Label	mount	744	752	5000
Layer	mount	4158	4093	5000
Link	mount	871	849	5000
MenuButton	mount	1609	1603	5000
MessageBar	mount	2383	2351	5000
Nav	mount	3046	3039	1000
OverflowSet	mount	1385	1412	5000
Panel	mount	2485	2504	1000
Persona	mount	1241	1257	1000
Pivot	mount	1520	1534	1000
PrimaryButton	mount	1478	1462	5000
Rating	mount	7016	7010	5000
SearchBox	mount	1483	1495	5000
Shimmer	mount	2913	2894	5000
Slider	mount	2116	2117	5000
SpinButton	mount	4252	4297	5000
Spinner	mount	825	834	5000
SplitButton	mount	2794	2832	5000
Stack	mount	856	853	5000
StackWithIntrinsicChildren	mount	2219	2166	5000
StackWithTextChildren	mount	4898	4879	5000
SwatchColorPicker	mount	9511	9436	5000
TagPicker	mount	2350	2466	5000
TeachingBubble	mount	74713	74120	5000
Text	mount	828	821	5000
TextField	mount	1544	1559	5000
ThemeProvider	mount	1446	1453	5000
ThemeProvider	virtual-rerender	1130	1133	5000
ThemeProvider	virtual-rerender-with-unmount	2010	1998	5000
Toggle	mount	1132	1138	5000
buttonNative	mount	526	535	5000

[Sebbiv]

@smhigley Hello, could I please request merge of this commit?

[micahgodbolt]

Going to force merge this as it's getting hung up on northstar and v9 screener jobs.